Rolling Road

[Mark CSL]

Had my car on the rolling road today but could not get the bloody thing to rev past 6000rpm.

John at thorny motorsport helped so a big thanks to john :thumbs:

So a full run tomorrow :whistle:
Still at 6000rpm 346bhp flywheel power at 6k is good i would think

We shall see tomorrow and i will post the graphs :supz:
http://i260.photobucket.com/albums/ii14/markcsl/IMG_0210.jpg
http://i260.photobucket.com/albums/ii14/markcsl/IMG_0209.jpg
http://i260.photobucket.com/albums/ii14/markcsl/IMG_02028.jpg

[Radders]

get some nice 99 ron fuel in it or even that 102 ron bp stuff :thumbs:

[Jaw_F430]

Seems like very good power @6k:thumbs:


So you make the same power as a normal M3 and then you have another 2000rpm to go :hahaha:

[Mark CSL]

It was a tank full of tesco 99Ron in it
I know now how to get it to rev to 8k
so we shall see how it does tomorrow:thumbs:

Then the remap and the speed limmiter removed for the ring trip:thumbs:

[Mark CSL]

Seems like very good power @6k:thumbs:


So you make the same power as a normal M3 and then you have another 2000rpm to go :hahaha:

Yip brill and the power on the csl does not max out till 7800rpm :thumbs:
I would like to think the remap might give me 10/15bhp :drool:

[NZ_M3]

I know now how to get it to rev to 8k



Mark mind PM me the secret too please ;)

[Mark CSL]

Mark mind PM me the secret too please ;)

Sorry i cant I told John i would not tell any 1 how it is done sorry
But he saved the day.

[dave1]

surely if he knew why did'nt he say before you ran it up today?:birdman:

[Mark CSL]

Sorry i cant I told John i would not tell any 1 how it is done sorry
But he saved the day.

I did not ask :hahaha: It was not his rolling road

[NZ_M3]

Sorry i cant I told John i would not tell any 1 how it is done sorry
But he saved the day.


Understandable and fair enough ...

Looking forward to those numbers Mark

[Mark CSL]

Understandable and fair enough ...

Looking forward to those numbers Mark

Yip i want to see as well

Has any 1 had a power run ? and what did your CSL make ?BHP :thumbs:

[glendog74]

If i recall, i think mine was 358bhp at the flywheel in standard trim before its Stage 1 tune. They tend to be between 355-360 or so i think.

[sailorbaz]

Well, queue my pathetic runs...

Many apologies for not posting sooner, had other 'pressing' issues such as repairing a ****ing bumper.

As some of you may be aware I went along to Hypertech last Sunday for a RR day with my local crowd of 'cruiser's from www.falkirkcruise.net I hadn't had the CSL on the Rolling Road before so was interested in how she run.

Car run alright, I thought initially. Wasn't jumping around the SMG gearbox at all, once in 3rd, stayed there for the run from about 1400rpm right up to a needle indicating 7800rpm or so. Was a bit fiddly-farty-abouty at 1st but Duncan got the hang of it and away we went.

We done 3 Runs but he wasn't happy with any of them and the last one, (One shown below) was done in 4th Gear.

Duncan wasn't at all happy with the runs and was going to call around with any recommendations on how to improve it or do it better on this type of car.

Needless to say, I wasn't impressed with the figures or that fact that I paid for 3 runs, got 4 however but only one graph. Will discuss all with him when I go along to another a week on Sunday.
http://img.photobucket.com/albums/v397/bazhugs/C5LBH.jpg
Original/full size image here - full size image (http://bavarian-board.co.uk/uploads/sailorbaz/C5LBH.jpg) Video 1
- Why does he brake at the end of the run? (http://www.youtube.com/watch?v=1zzWmSRfcZ8)
Video
2 (http://www.youtube.com/watch?v=bk1dgnN11Xs)

Any comments on how to get this sorted are more than welcome as explained, I am going back on Sunday and may get another run or two thrown in to sort it out.

FYI, Car was serviced about 4K miles ago, last July. FBMWSH, new air filter just a few days before hand.

[RichW]

The dyno calculates the resistance of the transmission when he lets the throttle off, its what the call the "run down" and it uses that to calculate the power of the car.

I would imagine that by breaking the dyno would think the engines slowing faster = theres more resistance than there actually is and give you a higher figure?!

[bryce]

I dont know much about RR's, but Ive never seen anyone brake in them!

Car doesnt sound like its revving flat out? Maybe just poor quality vid..

[thegingerninja]

You should NEVER brake during run down - it makes the BHP "appear" higher than it actually is. You need to go to a dyno operator who has some experience of M3's. There is a little trick required to get them to rev out correctly - sworn to secrecy I'm afraid.

[Windowlicker]

You should NEVER brake during run down - it makes the BHP "appear" higher than it actually is. You need to go to a dyno operator who has some experience of M3's. There is a little trick required to get them to rev out correctly - sworn to secrecy I'm afraid.

Is it any of these methods ???
http://m3blogs.com/2006/01/30/dyno-measuring-issues-with-the-e46-m3.aspx

[DazBlackCSL]

You should NEVER brake during run down - it makes the BHP "appear" higher than it actually is. You need to go to a dyno operator who has some experience of M3's. There is a little trick required to get them to rev out correctly - sworn to secrecy I'm afraid.

Well said ... aside from my bias , only through experience .. :whistle:
Thorney has buckets of experience with CSL's and M3 would not , outside of that others like BM Sport / Bexley and simpsons ... trust my pride and joy to any monkey with 10 mins experience

[glendog74]

Here's the print out from my Stage 1 at Thorney back in August - 370.7bhp at the flywheel:

http://img401.imageshack.us/img401/3391/scan0001m.jpg

[Radders]

not too proud of this, perhaps some had filled the car with diesel? :hahaha:

anyway the report that the previous owner had done.

[_Nathan_]

355 on the Simpson dyno is good - it isn't as optimistic as some of the others...

[Radders]

355 on the Simpson dyno is good - it isn't as optimistic as some of the others...

:smt055


:thumbs:

[glendog74]

355 is just fine for a standard car :smt023

[NZ_M3]

Any updates Mark?

[AlexGTT]

355 is just fine for a standard car :smt023

Indeed, that is bang on the money. Mine did 360bhp on Simpson's dyno after some fettling. Initial runs were down around 340bhp but we noticed it was just running a tiny bit richer than most CSL's they'd seen for some reason.

If you speak to them, most standard CSL's they see run around 355.

The videos of the CSL on the dyno earlier in this thread don't sound right at all. Braking on the dyno durring coast down is just wrong and the induction doesn't sound right for a car reving to max rpm. Are you sure the airbox flap was opening? Doesn't sound anywhere near as animalistic as it should. Personally, I'd only let a specialist put mine on the dyno, as mentioned earlier in the thread.