another round of weight loss

[khooni]

so I went to simpsons for subframe reinforcement plate welding
and lo and behold, i got inspired by Tony's newly re-furb lamborghini candy red coloured CSL with wide arch kit.

wow.

and the BBS F1-R wheels in black running 265/285. simply wondrous and pricey.
I wonder how much they cost but I figure around 6k for a set.

in any case,

my new weight loss diet shall consist of
1) lithium battery
2) supersprint race muffler and resonator
3) Intrax 1k2
4) removal of speakers and head unit
5) + any other bits, Anthony deems surplus on my track beast.

any and all suggestions welcomed.

Nick

[Stumpy]

This post is useless without pics...


:gayfight:

[khooni]

no pics mate.

i was literally speechless and forgot.......

[billyboysm3]

What suspension is on the car at the moment?

Has it got interior? Supersprint light weight race and supersprint cats and centre pipe saves good kg.

Intrax 1k2 are great got those on the m3 which is fully stripped bar seats and dash

[khooni]

mine has a full roll cage but re-carpeted.
currently running kw clubsport (1st gen non -adjustable)

will be selling those once they are off if anyone is interested.

[trackm3]

Intrax 1k2 is just so compliant for road and track, you will be very impressed.

[Roland]

This post is useless without pics...

+1

[khooni]

apologies.

I will post loads of pic.s once I get the car back.

right now, the rear suspension is off the car and plates are being welded + subframe repair being done. Instead of having sub frame bushings, I am welding it solid to the rear suspension. One less bushing to worry about. The car is never going to be anything but a track car anyway so I might as well go the whole hog.

On the fronts, I am going to have nylon bushings for the last remaining bit of rubber on the car.

To address my complaint of feel, Anthony will set the car up with intrax 1k2 to give it more caster. It won't do anything about the lightness though.

given the lack of info on supersprint db, I do hope someone can answer the db question otherwise I may be forced to experiment.

[billyboysm3]

apologies.

I will post loads of pic.s once I get the car back.

right now, the rear suspension is off the car and plates are being welded + subframe repair being done. Instead of having sub frame bushings, I am welding it solid to the rear suspension. One less bushing to worry about. The car is never going to be anything but a track car anyway so I might as well go the whole hog.

On the fronts, I am going to have nylon bushings for the last remaining bit of rubber on the car.

To address my complaint of feel, Anthony will set the car up with intrax 1k2 to give it more caster. It won't do anything about the lightness though.

given the lack of info on supersprint db, I do hope someone can answer the db question otherwise I may be forced to experiment.

Ive gone AKG Solid all round and solid front control arms but on track M3.

Supersprint non res is a extra 3DB and Supersprint Cats is also a extra 3DB

I had Cats, non res pipe and lightweight race = 105/106DB at Snett.

Then tried every alternative, the CSL now has SS cats, SS non res and OEM back box and I find that is the best sound.

Would love a few laps in the CSL with the intrax and cage.

Billy

[Mike R]

Then tried every alternative, the CSL now has SS cats, SS non res and OEM back box and I find that is the best sound.


That is how my car came - I found that although the induction noise was much more prevalent over the exhaust, it sounded way to raspy IMO.

Now the induction noise and the exhaust (with the SS Race back-box) fight for dominance of who is loudest :bigcry:.

[cslsuperfan]

That is how my car came - I found that although the induction noise was much more prevalent over the exhaust, it sounded way to raspy IMO.

Now the induction noise and the exhaust (with the SS Race back-box) fight for dominance of who is loudest :bigcry:.


Been running the full SS system with non res Centre section.

Airbox certainly has a fight on its hands to be heard. :smokin:

[khooni]

Ive gone AKG Solid all round and solid front control arms but on track M3.

Supersprint non res is a extra 3DB and Supersprint Cats is also a extra 3DB

I had Cats, non res pipe and lightweight race = 105/106DB at Snett.

Then tried every alternative, the CSL now has SS cats, SS non res and OEM back box and I find that is the best sound.

Would love a few laps in the CSL with the intrax and cage.

Billy

tks for your answer. would love to take you next time i'm out on track

think i am going to stick to the stock exhaust for now as i have really no complaints about the intake noise. I was just doing this for weight loss but having worries on a brands gp day at 101dB static is something I can do without.

i thought that since the stock setup only registered 88db for some reason, I was never going to put 10db just by getting the resonator and back box. But it does seem like guys are getting up to 105/6db with race cats + resonator+race box. shame. I guess I have to look for weight loss some other way.

[cslsuperfan]

tks for your answer. would love to take you next time i'm out on track

think i am going to stick to the stock exhaust for now as i have really no complaints about the intake noise. I was just doing this for weight loss but having worries on a brands gp day at 101dB static is something I can do without.

i thought that since the stock setup only registered 88db for some reason, I was never going to put 10db just by getting the resonator and back box. But it does seem like guys are getting up to 105/6db with race cats + resonator+race box. shame. I guess I have to look for weight loss some other way.


Khooni

have you considered Recaro Spa's?

2.5 Kgs carcass and 3 kgs for runners. I realise they're budget busters but a good quality second hand seat could net 5-10 kgs saving over GRP Recaro's or oem seats.

[billyboysm3]

tks for your answer. would love to take you next time i'm out on track

think i am going to stick to the stock exhaust for now as i have really no complaints about the intake noise. I was just doing this for weight loss but having worries on a brands gp day at 101dB static is something I can do without.

i thought that since the stock setup only registered 88db for some reason, I was never going to put 10db just by getting the resonator and back box. But it does seem like guys are getting up to 105/6db with race cats + resonator+race box. shame. I guess I have to look for weight loss some other way.

Nah, get a 3 inch straight through pipe and single exit, and save the oem weight, approx 23kg, probably cost a grand. It's my next mod in winter.

I can pm you details.

[khooni]

Khooni

have you considered Recaro Spa's?

2.5 Kgs carcass and 3 kgs for runners. I realise they're budget busters but a good quality second hand seat could net 5-10 kgs saving over GRP Recaro's or oem seats.

I currently have recaro spg. not as light as spa but cheap.... came with the car. not worth it to upgrade for me since i don't have the original seats to sell for ££££

[khooni]

Nah, get a 3 inch straight through pipe and single exit, and save the oem weight, approx 23kg, probably cost a grand. It's my next mod in winter.

I can pm you details.

please do.

[cslsuperfan]

I currently have recaro spg. not as light as spa but cheap.... came with the car. not worth it to upgrade for me since i don't have the original seats to sell for ££££


Its worth keeping an eye out for second hand spa's.

Alex AKA Karbonkid bought a carcass and had it re upholstered DIY.

[Mike R]

Nah, get a 3 inch straight through pipe and single exit, and save the oem weight, approx 23kg, probably cost a grand. It's my next mod in winter.

I can pm you details.

Before you go down this route, I would research this a great deal, as I have seen cars fitted with just the cross-over section in a different position that then messes with the back pressure and cause all sorts of weird issues with the VANOS, where the cars lost 30-40bhp in the mid-range due to the VANOS becoming confused and not working properly. There is a big thread about it on the M3forum. A big exhaust manufacturer had to completely redesign their exhaust because of the issues.

[rstoughy]

Before you go down this route, I would research this a great deal, as I have seen cars fitted with just the cross-over section in a different position that then messes with the back pressure and cause all sorts of weird issues with the VANOS, where the cars lost 30-40bhp in the mid-range due to the VANOS becoming confused and not working properly. There is a big thread about it on the M3forum. A big exhaust manufacturer had to completely redesign their exhaust because of the issues.

Mine had Silencer's where the cats should be. Due to the class regs I had 2x 100cell cats fitted. That gained me 10bhp :thumbs:

[Mike R]

Mine had Silencer's where the cats should be. Due to the class regs I had 2x 100cell cats fitted. That gained me 10bhp :thumbs:

These cars were gaining a small amount at the top end, but loosing huge amounts in the mid-range, so the power step "felt" good, but the reality was a loss of area under the graph.

[khooni]

think i have std m3 cats (the 200 cell version) which is why it is so quiet
now. maybe i'll be ok who knows? I intend to run it with the current cat setup anyway.

Thanks for the headsup.

[khooni]

car just got back tonight.

Initial pic

can't begin to describe how chuffed i am with the intrax 1k2 suspension. As previously mentioned, I no longer have subframe bushings as the subframe is solidly welded to suspension. This is done in conjunction with welding reinforcement plates to the subframe and repairing a little tear. Forget the resin injections, this is what you want. Too bad I have NO pic.s

You'll just have to take my word for it.

The supersprint exhaust i must say sounds just right for me. not too loud but I'll have to test it and report back.