Clutch Slur

[Bounce]

Hi guys,bin having trouble with the old clutch slur issue since i got the CSL,being on 60k i thought the clutch may be on the way out.But after driving in S5 and giving it some welly,then in S1 for a couple of days,i went out for a blast tonight on the dry roads[for a change]and its gone,and pulling like a train.So thanks for the tips on how to sort it guys.WHEN and if the slur returnes ill get the warranty to have a look,now i know the clutch is not fooked.The previous owner said he used to lift on changes,which is a big no no in my book.:thumbs:

[glendog74]

The previous owner said he used to lift on changes,which is a big no no in my book.:thumbs:

Indeed - only gayboys lift on changes :hahaha:

[danr55]

What is clutch slur? I've pretty much left it in S5 since buying the car, maybe I need to change it about a bit, sometimes the changes seems to drop the revs, and I dont think the clutch needs replacing. Well, hope not..

[Bounce]

Indeed - only gayboys lift on changes :hahaha:Is throttle lifting and shirt lifting the same sort of thing then.:gayfight:

[AlexGTT]

Is throttle lifting and shirt lifting the same sort of thing then.:gayfight:

In a word....................................yes.:hahah a:

[SpineOnABap]

What is clutch slur? I've pretty much left it in S5 since buying the car, maybe I need to change it about a bit, sometimes the changes seems to drop the revs, and I dont think the clutch needs replacing. Well, hope not..

Under acceleration on a wide-open throttle do some short-shifts at around 4-6k RPM and you could well experience it. You'll feel / hear the wha-wha-wha-wha-wha-oh hang on there's the gear fully engaged.

It's the single most irritating thing about the CSL and something they (BMW) have never addressed.

It does come and go depending on driving style and I think it can also be gotten rid of by clearing the error logs down (worked on mine a few months back).

When mine does it (frequently) it makes me want to get out and smash it up with a massive laser axe through the bonnet. Infuriating!

[glendog74]

Maybe I've just been lucky but I have not yet experienced clutch slur in almost 2 years of ownership. The closest I get to it are the lengthened gear changes that you get when I try 'S1' on a rare occasion.

FYI, I never lift when giving it the beans & my car was a late build which had a replacement clutch some time before I bought it.

[shane@mbtech]

Maybe I've just been lucky but I have not yet experienced clutch slur in almost 2 years of ownership. The closest I get to it are the lengthened gear changes that you get when I try 'S1' on a rare occasion.

FYI, I never lift when giving it the beans & my car was a late build which had a replacement clutch some time before I bought it.


Never experienced clutch slur myself,

Maybe we drive them properly, Rob:whistle:

[Bounce]

Never experienced clutch slur myself,

Maybe we drive them properly, Rob:whistle:Or maybe you dont go over 4k revs.;);)

[shane@mbtech]

Or maybe you dont go over 4k revs.;);)

Says the man who drives it "in s1 for a few days":gayfight::gayfight:

[shimmy]

my first clutch was changed due to slur

second one has started to do it now and bmw are monitoring it:thumbs:

it is when the car is under heavy load when changing gear

[Bounce]

Says the man who drives it "in s1 for a few days":gayfight::gayfight:That was just to cure the problem,i didnt say i liked it.:blalalala:

[Thorney]

If you time it right a slight lift on upchanges is quicker than a full throttle shift.

Seemed to work for me in the CSL Cup races ;)

[shane@mbtech]

If you time it right a slight lift on upchanges is quicker than a full throttle shift.

Seemed to work for me in the CSL Cup races ;)


With a little help from your aero package;)

[shimmy]

John, do you run updated clutch and flywheel in your Cup car last year?

[weedavey]

If you time it right a slight lift on upchanges is quicker than a full throttle shift.

Seemed to work for me in the CSL Cup races ;)

Really! I'll be experimenting with this next time im out then..

At what point did you lift? Just before, bang on or just after you clicked to shift?

[The Gorilla]

Hi,

I have always slightly backed off the
Throttle, when changing
gear, and find its much better.

Smoother, quicker, and less
issues.

Plus you do not transmit such aggressive
shock loads through the Transmission
drive train.

I believe all SMG 2 cars suffer some clutch
slur under heavy load, when warmed up,
its just that some drivers are better than others
at actually detecting it at full chat.

If you 'feather' your throttle pedal inputs when
driving the bends on circuit, ala the Senna / Schumacher club,
even on a CSL with SMG updates, you can actually
get ahead of the E.Gas [fly by wire] to the point
where the throttle pedal is being dabbed, but the
engine is no longer actually responding to the inputts.

ie, Throttle pedal is lifted but engine is still increasing revs.

Then go drive a S54 with a throttle cable, not E.Gas
and its a whole new world.

I think that some clutch slur is detected when
under load you have up-shifted quickly but the
stepper motor activated by the throttle pedal petom
are to a point still catching up,
so the ECU/DME 'hangs' for a split second which
gives the impression of clutch slur, or a slight delay
on upshifts, as its not instant.

As the CSL works on a Throttle load input, no MAF,
this combined with E.Gas, is I beleive more to do with
slow shifts or perceived 'clutch slur', than the actual clutch,
until the clutch is actually nearing its life cycle end.

This is borne by the claim, that 'clutch slur' can in
part be rectified by driving hard'

Regards,

The Gorilla.

[Dan]

If you time it right a slight lift on upchanges is quicker than a full throttle shift.

Seemed to work for me in the CSL Cup races ;)

Totally agree there...

Unless ABSOLUTELY FLAT OUT in either 4th gear or upwards I always slightly lift as well, was told to do this when I bought it and it would change better, and IMO it does :thumbs:

[weedavey]

Plus you do not transmit such aggressive
shock loads through the Transmission
drive train.



I Have been concerned with this since buying the car.

[SpineOnABap]

Never experienced clutch slur myself,

Maybe we drive them properly, Rob:whistle:

Sadly it's not caused by driving style, otherwise we could prevent it. It's caused by shit design. It's the only thing I really HATE about CSL, and it's been bugging me since 2003 so it's a good job I really like the rest of the car :hahaha:

[shimmy]

I have a gut feel that the clutch slur issue us an easy fix bit it's just that nobody has worked out what it is yet!

Does the M3 SMG have the same problem?

[danp]

Sadly it's not caused by driving style, otherwise we could prevent it. It's caused by shit design. It's the only thing I really HATE about CSL, and it's been bugging me since 2003 so it's a good job I really like the rest of the car :hahaha:

Is the design different from normal E46 M3 SMG? (apart from software)

They don't slur so much do they?

[SpineOnABap]

Don't know about the design, Dan. Something's different enough to cause this issue though.......


I had an E46 M3 SMG before the CSL and it didn't have this problem during the year I owned it.

[SpineOnABap]

I have a gut feel that the clutch slur issue us an easy fix bit it's just that nobody has worked out what it is yet!


You could well be right Shim! We (the CSL community) have been banging on about this issue since we first encountered it in 2003 - 7 years and still none the wiser. BMW clearly didn't care......

[The Gorilla]

Hi,

E46 M3 SMG 2 has a 'MAF' where the CSL does not.

The infamous CSL clutch slur is as a result
of the way the throttle inputs are received
by the ECU/DME and the commands it makes
based on the data received.

The 'Alpha N' type arrangement on the CSL
works on throttle/load there is no air
reading as such.

Regards,

The Gorilla.

[mattCSLnut]

Sadly it's not caused by driving style, otherwise we could prevent it. It's caused by shit design. It's the only thing I really HATE about CSL, and it's been bugging me since 2003 so it's a good job I really like the rest of the car :hahaha:

I had something resembling what's been described as "Clutch Slur" happen to me @ Bedford TD yesterday. SMG in S5, SPORT on , 2nd into 3rd full throttle and a BIG flat spot, with a delay in execration. Very strange :smt017 Keep in mind my clutch has been changed under warranty along with a new Duel mass flywheel only a year and 8000 miles ago.

[Bounce]

Don't know about the design, Dan. Something's different enough to cause this issue though.......


I had an E46 M3 SMG before the CSL and it didn't have this problem during the year I owned it.I had an SMG M3 for 4 years before the CSL,and never had one problem with slur.

[shane@mbtech]

I had something resembling what's been described as "Clutch Slur" happen to me @ Bedford TD yesterday. SMG in S5, SPORT on , 2nd into 3rd full throttle and a BIG flat spot, with a delay in execration. Very strange :smt017 Keep in mind my clutch has been changed under warranty along with a new Duel mass flywheel only a year and 8000 miles ago.


What does this mean:smt017

What level was your fuel at? ,I had similar issues always out of a chicane with between 1/4 and empty tank. I try not to run too low on fuel on track now, never had the issue since.

Did you have dsc completely off? or in M track?


Slur as described here is clutch slip so your revs rise then slur back down as clutch bites. Your symptoms sound slighhtly different

[danr55]

so does changing to S1 for a couple of days then changing back seem to fix it?

Any other specific fixes?

Don't fancy driving in S1 just to find out it doesn't improve anything!:hahaha:

[shimmy]

be careful on track as said as it can feel like cluch slur a bit as you can get fuel starvation on long corners then onto the straight (but never had it at Bedford - but coppice at Donny it alwasy happens about 1/6 tank)

[mattCSLnut]

What does this mean:smt017

What level was your fuel at? ,I had similar issues always out of a chicane with between 1/4 and empty tank. I try not to run too low on fuel on track now, never had the issue since.

Did you have dsc completely off? or in M track?


Slur as described here is clutch slip so your revs rise then slur back down as clutch bites. Your symptoms sound slighhtly different

NO... no rising revs + the fuel tank was half full and it didn't feel like fuel starvation. The ambient temperature was between -2 and 2 deg C :( plus this being my first outing at Bedford, the DSC stayed firmly ON and was kept occupied :hahaha: Great turnout despite Siberian winter weather :whistle:

[SpineOnABap]

Hi Matt, that would almost certainly have been your DSC taking over (even if the dash light wasn't activated!). It would have done the same in M-track mode too. The DSC software doesn't always activate the dash light when it's doing it's thing. It's surprising how much it interferes on those full throttle redline shifts even when the temps are high and you're on sticky rubber like MPSC. DSC OFF is the cure

[shane@mbtech]

NO... no rising revs + the fuel tank was half full and it didn't feel like fuel starvation. The ambient temperature was between -2 and 2 deg C :( plus this being my first outing at Bedford, the DSC stayed firmly ON and was kept occupied :hahaha: Great turnout despite Siberian winter weather :whistle:

Pussy:gayfight::gayfight::gayfight::gayfight::gayf ight:

[shimmy]

the DSC stayed firmly ON and was kept occupied :hahaha:

:gayfight::hahaha:

. DSC OFF is the cure


:thumbs:

i am not one for always taking the DSC off, def not in the wet. M track is usually on for half a day at least mainly to cut downt he risk factor but nearly always finish the day all systems OFF if it is dry

[mattCSLnut]

:gayfight::hahaha:




:thumbs:

i am not one for always taking the DSC off, def not in the wet. M track is usually on for half a day at least mainly to cut downt he risk factor but nearly always finish the day all systems OFF if it is dry

There was ice & snow @ Bedford on the 30th so excuse me for leaving DSC on :blalalala:

[mattCSLnut]

Pussy:gayfight::gayfight::gayfight::gayfight::gayf ight:
Fighting talk for a Big Girls Blouse :gayfight: Where were you B.G.B. ??? ;)

[shane@mbtech]

:gayfight::hahaha:




:thumbs:

i am not one for always taking the DSC off, def not in the wet. M track is usually on for half a day at least mainly to cut downt he risk factor but nearly always finish the day all systems OFF if it is dry


DSC off is more fun:supz::supz:

[mattCSLnut]

DSC OFF is the cure

I hear U friend but not when there's black ice on the road and top temperature of 2 degrees C :whistle:

[shane@mbtech]

Fighting talk for a Big Girls Blouse :gayfight: Where were you B.G.B. ??? ;)


Probably playing with myself:birdman:

[shane@mbtech]

I hear U friend but not when there's black ice on the road and top temperature of 2 degrees C :whistle:

On track it matters not, if there was black ice on the track I would not go on tbh. Some goon doing 90 rear ending you on black ice:banghead:

Oh its probably more dangerous to take photos whilst driving on ice than it is to drive with dsc off on ice:whistle:

[mattCSLnut]

Probably playing with myself:birdman:
Be careful not to cause yourself an injury and end up limp wristed for the rest of eternity :gayfight: :blalalala: ;)

[mattCSLnut]

On track it matters not, if there was black ice on the track I would not go on tbh. Some goon doing 90 rear ending you on black ice:banghead:

Oh its probably more dangerous to take photos whilst driving on ice than it is to drive with dsc off on ice

No goons at Bedford on the 30th. Everyone was well behaved, except one CHAV in a TT Supra who fancied himself against the CSL but lost it BIG time and went off track, ploughing :hahaha:. Soon after, he was Black Flagged and invited to leave :blalalala:

[mattCSLnut]

On track it matters not, if there was black ice on the track I would not go on tbh. Some goon doing 90 rear ending you on black ice:banghead:

Oh its probably more dangerous to take photos whilst driving on ice than it is to drive with dsc off on ice:whistle:

Not from my experience :blalalala:

[shane@mbtech]

Not from my experience :blalalala:

Stick to photography then mate;)

[SpineOnABap]

Did an experiment this week.

On Tuesday mine was slurring like someone after 30 pints on the S5 full throttle (no lift) shortshifts at around 4,000 RPM. It had been like this for a while.... so....

For the last few days I've driven just the same (still S5 etc) EXCEPT I've lifted slightly on the shifts, so that I don't get any slurrrrrrrrr.

I go out today and decide to try the old full throttle no lift changes again and guess what - no slurrrr whatsoever. Insta-changes & sharp as a knife! Won't slurrrr even in the slightest.

It's 'learned' to be perfect again.

Welcome to the comedy world of the CSL SMG :banghead:

:hahaha:

[shimmy]

Did an experiment this week.

On Tuesday mine was slurring like someone after 30 pints on the S5 full throttle (no lift) shortshifts at around 4,000 RPM. It had been like this for a while.... so....

For the last few days I've driven just the same (still S5 etc) EXCEPT I've lifted slightly on the shifts, so that I don't get any slurrrrrrrrr.

I go out today and decide to try the old full throttle no lift changes again and guess what - no slurrrr whatsoever. Insta-changes & sharp as a knife! Won't slurrrr even in the slightest.

It's 'learned' to be perfect again.

Welcome to the comedy world of the CSL SMG :banghead:

:hahaha:

Ok, my slur is also back so i will try the same thing next week. I am off south and west for 3 days with work and play and will drive a day with slur flat on changes, then a day with lift and last day flat changes again and report back!

[Bounce]

My slur is back aswell,im gonna try lifting for a while[not shirt] to see if it helps.:bigcry:

[Magsy]

I have a slow M3 not a CSL but I have developed this problem too so I thought I'd chip in.

Car has 30k, 54 plate, nothing wrong. Drove 3000 miles inc 'ring and it was whacking me really hard, perfect engagement of clutch. Went up Stelvio, tons of passes, flat out on the a'bahn; my clutch was good

I got BMW DIS on my laptop and one night back in Novemeber I hit the 'Reset Clutch Curves' option. It asked me to start the car, so I fired it up, felt it pulsing the clutch to find the bite point and it was done.

Well I wish I hadn't done that now because from then till now it slur's! I've reset it twice since, done a full gearbox teach in, basically all the options.

There is no point to the story really except that it just goes to confirm there is some issue in the software that just doesn't learn the correct way to release the clutch.

Hard driving for a few hundred miles helps but its is always bad on a cold morning and never fails to slip at 4-6k full throttle.

I know my clutch was fine and just hitting a button caused this issue, fecking mad with myself :bigcry: (I have the BMW work instructions too, so I'm almost certain I did everything correctly but I might try taking it to someone...)

[s.mac]

Ive just had all the updates done to stop the hesitation in gear change and found anti slip kicks in as soon as I boot it even when changing to 2nd and 3rd :banghead: I haven't done enough miles or driven it like it should be to see if it sorts its self out

[shimmy]

my clutch is being changed by BMW as we speak (foc) :smokin:

[s.mac]

let us know if it was worn out :)

[shimmy]

let us know if it was worn out :)

22k hard miles - ill let you know ;)

[mpower!]

I have a slow M3 not a CSL but I have developed this problem too so I thought I'd chip in.

Car has 30k, 54 plate, nothing wrong. Drove 3000 miles inc 'ring and it was whacking me really hard, perfect engagement of clutch. Went up Stelvio, tons of passes, flat out on the a'bahn; my clutch was good

I got BMW DIS on my laptop and one night back in Novemeber I hit the 'Reset Clutch Curves' option. It asked me to start the car, so I fired it up, felt it pulsing the clutch to find the bite point and it was done.

Well I wish I hadn't done that now because from then till now it slur's! I've reset it twice since, done a full gearbox teach in, basically all the options.

There is no point to the story really except that it just goes to confirm there is some issue in the software that just doesn't learn the correct way to release the clutch.

Hard driving for a few hundred miles helps but its is always bad on a cold morning and never fails to slip at 4-6k full throttle.

I know my clutch was fine and just hitting a button caused this issue, fecking mad with myself :bigcry: (I have the BMW work instructions too, so I'm almost certain I did everything correctly but I might try taking it to someone...)


that is weird mate mine has exactly the same problem started about a week ago exact same symptons?

my car is a 2003 m3 with 31,000 miles on it!

did you get it sorted?

[mpower!]

afternoon,

i have a standard e46 m3 and im having the same problems as you guys with the clutch slur,

Ive been down bmw and they have quoted me £1140 for a clutch flywheel and the smg software update.

My car has only covered 30,000 miles is it really going to need a new clutch? ive had it since 20,000 and it never did this till about 120 miles ago when i first used launch control?

ive got a appointment with a bmw technician on monday, but hes just gunna tell me i need a new clutch as thats what hes paid toi say.lol

has anyone got any ideas on what to do?

[shimmy]

get a new clutch :beer:

could alwasy shop around for prices before they persuade you to spend £500 investigating it and then get tied to them.

before you go get 3 prices, dealers and non dealers - dont forget most of the price is labour so they can do deals

[mpower!]

get a new clutch :beer:

could alwasy shop around for prices before they persuade you to spend £500 investigating it and then get tied to them.

before you go get 3 prices, dealers and non dealers - dont forget most of the price is labour so they can do deals

can you not just get the clutch point redone? is it a possibility?

i read on here that you guys just go for a thrash about and that seems to sort it i might try that so far every time ive done that it seems like its just about to pack up!lol
any other ideas?

[shimmy]

getting the clutch retaught takes about 1/2 hour and can get it feeling like new

BUT imho it does not always sort it permantly and often if for soem reason the compensator is not working correctly the clutch problem wil return. My first clutch was slipping on or off for 10k miles even though i tried to sort it with the reprogramming - but it always came back

[mpower!]

getting the clutch retaught takes about 1/2 hour and can get it feeling like new

BUT imho it does not always sort it permantly and often if for soem reason the compensator is not working correctly the clutch problem wil return. My first clutch was slipping on or off for 10k miles even though i tried to sort it with the reprogramming - but it always came back


when the re taught the clutch do they do it electronically or is it a clutch out jobby mate?

[shimmy]

just laptop plugged into the car under the steering wheel and iirc engine running :thumbs:

[The Gorilla]

Hi,

I was informed that 5/6 hard Launch Control
Starts, would just about eat a new SMG clutch?

Can anybody confirm or dispel this.

As a 30,000 mile SMG clutch doing a hard
launch control, is I would have thought
asking for trouble.

If you drive really hard, you can eat a
355 F1 clutch in about 2/3k miles and
a 360 F1 clutch in about 5/6k miles.

I think the 355 has a update/upgrade which
improves it slightly.

Thats without launch control etc.

Yes, learnt the hard way.

Regards,

The Gorilla.

[Bounce]

getting the clutch retaught takes about 1/2 hour and can get it feeling like new

BUT imho it does not always sort it permantly and often if for soem reason the compensator is not working correctly the clutch problem wil return. My first clutch was slipping on or off for 10k miles even though i tried to sort it with the reprogramming - but it always came backIve got to go through all this bollocks on friday at Murketts,they have to try this before they can give you a new clutch,athough Andy Pressland says it does actually stop the slur in a few cars,and he would know.says they have well over 50 CSLs on there books now.;)

[mpower!]

Hi,

I was informed that 5/6 hard Launch Control
Starts, would just about eat a new SMG clutch?

Can anybody confirm or dispel this.


Regards,

The Gorilla.


I don't think that's true mate as a guy on the cutters forum reckons he's done it about 30 times and his cars still on the same clutch and he reckons it's fine!

[Hazy]

If you drive really hard, you can eat a
355 F1 clutch in about 2/3k miles and
a 360 F1 clutch in about 5/6k miles.

I think the 355 has a update/upgrade which
improves it slightly.

Thats without launch control etc.



Thats bollox mate, sorry. F1 clutches in Ferraris are pretty durable if set up correctly and used correctly. I'm yet to have a clutch in any of my F1 Ferraris (on my fourth) probably done 50000 miles between the four of them, fair bit of trackwork too

[NZ_M3]

I don't think that's true mate as a guy on the cutters forum reckons he's done it about 30 times and his cars still on the same clutch and he reckons it's fine!

Doubt it'd eat clutches as there's virtually no slip when it engages (I've only ever done it once in my car and it scared the crap out of me and vowed to never use it again - I can imagine the stress it places on the rest of the car) - I'd say it'll rip the rear subframe out of the car before it burn up a clutch!!

[Mark CSL]

Ok People there is a problem that bmw are not going to sort now :bigcry:

If you tell BMW to take the box out for clutch slipping and you are willing to pay for it as long as the clutch is worn below the limit thats fine.

BUT and its a big BUT if it is within spec i want warranty or good will to pay.

Thats how to tell bmw you want the clutch sorted as all the CSLs i have seen
and thats a few with some at 54,000 miles and the clutch was fine but flywheel had burn marks on it warranty picked up the tab :thumbs:

Cheers Mark CSL

[The Gorilla]

Hi

Hazy- F1 Clutch and sofware in a 355 is
about as crude as it gets, about twice as
slow as SMG 11.

Well known in the Ferrari world to gobble up clutches.

F1 Clutch in my first 360 F1 was gone in around
5500 miles from new.

Clutch in my second 360 F1, was gone in just
over 6,000 miles.

Third 360 was a Manual, clutch did 15,000 miles
plus and car was then sold.

Mates 360 F1 purchased with 5000 miles,
sold to HR Owen with 12,300 miles, at agreed
price, when arriving to deliver for payment
Diagnostic test shows clutch is 93 % worn.

Records show that it was its second clutch.

Its just like the 360 front wishbone bushes that always
seem to fail after about 4/5000 miles of hard use, and
you had to have complete arms both sides at
750.00 aside + Labour as Ferrari would not sell just the
bush/bearing, they have now changed their policy on
this.

2k for front wishbone bushes after 4/5k miles with a
clutch thrown in is not exactly what you expect.

On BMW M3 SMG 11 Launch control, there is
an article somewhere that confirms that with
10 launch starts then the clutch can be something
like 75/80 worn, it also mentions that 'slack'
or 'play' can result in the drivetrain as
a result of these lauanches etc.

Regards,

The Gorilla.

[glendog74]

Have never tried it on mine and i see it as rather gimmicky tbh. Why fit something to a car that will wear expensive clutches prematurely that only brings questionable/minimal benefit? Silly BMW :banghead: :hahaha:

[weedavey]

Have never tried it on mine and i see it as rather gimmicky tbh. Why fit something to a car that will wear expensive clutches prematurely that only brings questionable/minimal benefit? Silly BMW :banghead: :hahaha:

Me niether and the more I read about its effects the less i want to....

on the flip side i remember it did give the csl in that jap driver race video a really good start, you know the one with the m5, lambo, porsche etc.

[mpower!]

after reading your posts on here about getting rid of clutch slur by giving your cars a pasting!

does that genuinley work i went out today and gave it a try and it seems slightly better, but i dont know if its pshycological or not?

i need to get this straightened out before tues 23rd as on that day im supposed to be booking it in after a test with a bmw technician for a new clutch and flywheel!!!!:banghead:

[mickaldo]

after reading your posts on here about getting rid of clutch slur by giving your cars a pasting!

does that genuinley work i went out today and gave it a try and it seems slightly better, but i dont know if its pshycological or not?

i need to get this straightened out before tues 23rd as on that day im supposed to be booking it in after a test with a bmw technician for a new clutch and flywheel!!!!:banghead:
seems to work for a while then goes back to sluring did in my case after half a day at oulton park.

[mpower!]

seems to work for a while then goes back to sluring did in my case after half a day at oulton park.


ok mate bollox im just gunna go in and pay for it!:bigcry:

then no more launch controls after that i only got to do it once!:smokin:

[SpineOnABap]

ok mate bollox im just gunna go in and pay for it!:bigcry:

then no more launch controls after that i only got to do it once!:smokin:

Unless you're getting constant clutch-slip (eg, from standstill) then I wouldn't bother paying for it to be replaced! It'll only start again after a while....

[shimmy]

Elliot

what happened to your trials in the end

did you get to a conclusion?

[SpineOnABap]

Elliot

what happened to your trials in the end

did you get to a conclusion?

Nah I just lost interest :hahaha: It's in on tuesday for another fault so I'll get them to reteach it while it's in.

[Hazy]

Hi

Hazy- F1 Clutch and sofware in a 355 is
about as crude as it gets, about twice as
slow as SMG 11.

Well known in the Ferrari world to gobble up clutches.

F1 Clutch in my first 360 F1 was gone in around
5500 miles from new.

Clutch in my second 360 F1, was gone in just
over 6,000 miles.

Third 360 was a Manual, clutch did 15,000 miles
plus and car was then sold.

Mates 360 F1 purchased with 5000 miles,
sold to HR Owen with 12,300 miles, at agreed
price, when arriving to deliver for payment
Diagnostic test shows clutch is 93 % worn.

Records show that it was its second clutch.

Its just like the 360 front wishbone bushes that always
seem to fail after about 4/5000 miles of hard use, and
you had to have complete arms both sides at
750.00 aside + Labour as Ferrari would not sell just the
bush/bearing, they have now changed their policy on
this.

2k for front wishbone bushes after 4/5k miles with a
clutch thrown in is not exactly what you expect.

On BMW M3 SMG 11 Launch control, there is
an article somewhere that confirms that with
10 launch starts then the clutch can be something
like 75/80 worn, it also mentions that 'slack'
or 'play' can result in the drivetrain as
a result of these lauanches etc.

Regards,

The Gorilla.

18 months 12000 miles in my 355F1, didnt have a clutch, F1 was great too but NOT it "sport" mode
12 months 10000 miles in my 360F1, no clutch, and the previous owners were mates of mine, no clutches
8 months 7000 miles 360 spider F1, no clutch, my best mate still owns the car its on 27000, no clutch (from new)
3 years, 18500 miles 360 Strad, no clutch from new
Six mates who all have Strads (we all brought them within 3 months:hahaha:) mileages vary, not one clutch between us.

its all down to the driver mate, I have a truck driver who does a clutch every 6-9 months, other driver in the same truck is still on the original clutch.

[The Gorilla]

Hi,

Hazy- yes, agree, there are drivers and
then there are drivers.

Regards,

The Gorilla.

[Magsy]

Ok, so I might have fixed mine today without spending a penny. Previous post here http://www.cslregister.com/forum/showthread.php?p=44987#post44987

Just to make it clear, I know I don't have a CSL but my issue is identical.
I drove another M3 for a couple of hours yesterday and it reminded me how bad mine had become, even though that one was slurring also at 35k miles but I know its owner lifts...

I've reset it again using DIS, which I have already done fully and correctly three times previous to no affect, except this time I did it with the car stony cold. It was 7 degrees in the garage and the car hasn't been started in 3 days. Previous resets had been with the car warm and one time red hot. I'm no engineer but I'd started to wonder about expansion of parts when hot etc..desperation in all honesty because I'm sick of the car like this.

Full teach in, Clutch Valve Values, Gearbox Adaption (where it finds the gate and all 7 cogs), clutch bite point and finally some acceleration sensor. Then reset the fault code it creates in the SMG DME.

I've driven in 100 miles this afternoon, turned it off n on a few times and let it sit for 2 hours. All in all it is back to normal, I cannot make it slur at all on 3rd to 4th now, whereas before you couldn't stop it. The bang is not quite as big as I have felt but there is absolutely no slur and gear engagement seems to be much quicker. I kept finding myself in a small hole before, now you tell it to change and it is in and home straight away, even on those iffy low rev part throttle shifts.

If its still like this in a weeks time then I'll be happy but this is a big leap over previous attempts which were shit right out of the box:banghead:

[mpower!]

Ok, so I might have fixed mine today without spending a penny. Previous post here http://www.cslregister.com/forum/showthread.php?p=44987#post44987

Just to make it clear, I know I don't have a CSL but my issue is identical.
I drove another M3 for a couple of hours yesterday and it reminded me how bad mine had become, even though that one was slurring also at 35k miles but I know its owner lifts...

I've reset it again using DIS, which I have already done fully and correctly three times previous to no affect, except this time I did it with the car stony cold. It was 7 degrees in the garage and the car hasn't been started in 3 days. Previous resets had been with the car warm and one time red hot. I'm no engineer but I'd started to wonder about expansion of parts when hot etc..desperation in all honesty because I'm sick of the car like this.

Full teach in, Clutch Valve Values, Gearbox Adaption (where it finds the gate and all 7 cogs), clutch bite point and finally some acceleration sensor. Then reset the fault code it creates in the SMG DME.

I've driven in 100 miles this afternoon, turned it off n on a few times and let it sit for 2 hours. All in all it is back to normal, I cannot make it slur at all on 3rd to 4th now, whereas before you couldn't stop it. The bang is not quite as big as I have felt but there is absolutely no slur and gear engagement seems to be much quicker. I kept finding myself in a small hole before, now you tell it to change and it is in and home straight away, even on those iffy low rev part throttle shifts.

If its still like this in a weeks time then I'll be happy but this is a big leap over previous attempts which were shit right out of the box:banghead:



hello mate what is the DIS reset and how do you do it??

i am in the exact same position that you are in mate my car is a 03 plate with 32k on the clock and having exact same problems as your first thread!

[NZ_M3]

=

I've reset it again using DIS, which I have already done fully and correctly three times previous to no affect, except this time I did it with the car stony cold.

The SMG training manual actually specifies that the car should be warm when the values are reset .. although I tend to agree that the difference is more noticeable when recalibration is done when the car is cold (I've tried both on the Autoenginuity and you definitely get a better result with the car cold).


The DIS is part of the BMW GT1 test system (I believe in this case a bootleg version from ebay :supz:)

[Magsy]

Ok, so it impoved a lot but slowly some very slight slur is returning.

NZ_M3:

There is an option in there called 'reset clutch curves', do you have any knowledge? It appears to say do this when you fit a new clutch after the teach in. I stupidly hit this button many months ago and now I'm wondering about its function.
It would be very dumb but does the car actually have a preset, fixed, clutch wear curve that is uses to adapt and of course by clearing it there is no way to recover? (I.e I actually need to tell it that my clutch is half worn; impossible to do)

In my case a damn good reason to stay away from eBay:whistle: