CSL exhaust for the track

Radders · 23-03-2009, 04:28 PM

need some advice from my fellow experienced CSL owners.

i need a exhaust but i do not want to risk being over the noise limit at any trackday. for me, not being able to go on track is just the worst thing and i would rather have the standard box if there was even a hint of risk.

the supersprint race back box was the prefered option but i am getting mixed reports on the noise issue.

please bear in mind i have SS race cats also.

just trying to gain a few bhp from a less restrictive back box

your advice on this very important matter is very much appreciated

Radders · 23-03-2009, 05:51 PM

is the milltek any good?

http://www.xlraceparts.com/milltek-b...ncer-241-p.asp

SMD · 23-03-2009, 05:59 PM

I would go for the same as Daz has just had to be honest mate!
Speak with Thorney they will tell you exactly how loud in DB each one is!

**shimmy** · 23-03-2009, 06:20 PM

as weight saving is one of the best plus points i would go with the SS race box.

as for noise chances are Bedford is the only place that you might struggle but most get by without issue. Induction noise tends to be only on track and exhaust worse on static so go for it, otherwise you wont be happy!

Radders · 23-03-2009, 06:24 PM

Quote:

Originally Posted by shimmy

as weight saving is one of the best plus points i would go with the SS race box.

as for noise chances are Bedford is the only place that you might struggle but most get by without issue. Induction noise tends to be only on track and exhaust worse on static so go for it, otherwise you wont be happy!

the strad is totally band from Oulton park and it is just the worst feeling when you get told NO. i have purchased the car to enjoy on the track and dont want any issue's. i have a miltek on the m3 E36 track toy me and Hazy run and that is perfect. not really that bothered about the quality of the noise as the induction sound is good enough

Nords · 23-03-2009, 06:34 PM

Radders, I'd stick with std to be on the safe side. 997RS were pulled at Donington for driveby noise, but my std CSL was fine on full chat...

Radders · 23-03-2009, 06:51 PM

Quote:

Originally Posted by SMD

I would go for the same as Daz has just had to be honest mate!
Speak with Thorney they will tell you exactly how loud in DB each one is!

Thorney too busy to take any calls

Simpson were too busy to do any extra work on my csl on friday

Recession??!! my f£$king arse!!!

_Nathan_ · 23-03-2009, 09:08 PM

From what I've read weight saving is the only real benefit with a back box - will you really notice one or two bhp?

**glendog74** · 23-03-2009, 09:53 PM

I went from standard to full Milltek including 100 cell cats and Stage 2 re-map. At the time i used the CSL everyday and i found the noise over the top and it also droned horrendously at 2.5-3k revs - i actually found myself down-shifting just to increase the revs to make the drone disappear! Fuel economy suffered too if your bothered about that!

Shortly after, i had the 100 cell cat swapped back out for OEM but kept the Miltek on as well as having a Stage 1 ECU reversion. The noise levels now are a lot more liveable with day-to-day and the drone is lessened. I have also had no issues getting on track at Castle Combe, which is supposedly one of the stricter tracks to get on when it comes to passing noise regs... Like someone said, Bedford is one place that can be arsey but most others should be fine with Miltek and probably SS too.

However... My CSL habits have now changed somewhat and i mainly use it for fun and track days. Therefore i am considering getting a SS system as i want a bit more noise again!

I wouldn't put a 100 cell cat back on though...

With an aftermarket system, weight saving is certainly a reality but power gains are minimal without ECU remap and rolling road. Even when i had my Stage 2 with 100 cell cat it only had 22bhp more than standard for £2000 outlay! Initial acceleration didn't seem any better but mid-range pull was very noticeable and made the car feel quicker as you go through the gears.

IMHO, if you're worried about noise i would keep it standard and spend the money on a BBK and suspension mods - in that order. Hope this helps!

**DazBlackCSL** · 23-03-2009, 11:25 PM

Quote:

Originally Posted by Radders

Thorney too busy to take any calls

Simpson were too busy to do any extra work on my csl on friday

Recession??!! my f£$king arse!!!

Mate im with him wednesday will get on the case

Love my SS lightweight race box / full system )looks sound and performance ... and am at bedford 11th May for some tuition so will let you know how I get on as its in my own car so will know if I get on with it

23-03-2009, 04:28 PM	#1
Radders S5 - Full Throttle Join Date: Jan 2009 Location: Merseyside Posts: 371 Casino cash: $551	CSL exhaust for the track need some advice from my fellow experienced CSL owners. i need a exhaust but i do not want to risk being over the noise limit at any trackday. for me, not being able to go on track is just the worst thing and i would rather have the standard box if there was even a hint of risk. the supersprint race back box was the prefered option but i am getting mixed reports on the noise issue. please bear in mind i have SS race cats also. just trying to gain a few bhp from a less restrictive back box your advice on this very important matter is very much appreciated __________________ the CSL, better that a 70k Porsche!

23-03-2009, 05:51 PM	#2
Radders S5 - Full Throttle Join Date: Jan 2009 Location: Merseyside Posts: 371 Casino cash: $551	is the milltek any good? http://www.xlraceparts.com/milltek-b...ncer-241-p.asp __________________ the CSL, better that a 70k Porsche!

23-03-2009, 09:53 PM	#9
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	I went from standard to full Milltek including 100 cell cats and Stage 2 re-map. At the time i used the CSL everyday and i found the noise over the top and it also droned horrendously at 2.5-3k revs - i actually found myself down-shifting just to increase the revs to make the drone disappear! Fuel economy suffered too if your bothered about that! Shortly after, i had the 100 cell cat swapped back out for OEM but kept the Miltek on as well as having a Stage 1 ECU reversion. The noise levels now are a lot more liveable with day-to-day and the drone is lessened. I have also had no issues getting on track at Castle Combe, which is supposedly one of the stricter tracks to get on when it comes to passing noise regs... Like someone said, Bedford is one place that can be arsey but most others should be fine with Miltek and probably SS too. However... My CSL habits have now changed somewhat and i mainly use it for fun and track days. Therefore i am considering getting a SS system as i want a bit more noise again! I wouldn't put a 100 cell cat back on though... With an aftermarket system, weight saving is certainly a reality but power gains are minimal without ECU remap and rolling road. Even when i had my Stage 2 with 100 cell cat it only had 22bhp more than standard for £2000 outlay! Initial acceleration didn't seem any better but mid-range pull was very noticeable and made the car feel quicker as you go through the gears. IMHO, if you're worried about noise i would keep it standard and spend the money on a BBK and suspension mods - in that order. Hope this helps! __________________ Cha'mone Mother F**ker!

23-03-2009, 05:59 PM	#3
SMD S6, Sport On, Traction Off Join Date: Jun 2008 Location: Shropshire Posts: 1,505 Casino cash: $10726	I would go for the same as Daz has just had to be honest mate! Speak with Thorney they will tell you exactly how loud in DB each one is!

23-03-2009, 06:20 PM	#4
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	as weight saving is one of the best plus points i would go with the SS race box. as for noise chances are Bedford is the only place that you might struggle but most get by without issue. Induction noise tends to be only on track and exhaust worse on static so go for it, otherwise you wont be happy!

23-03-2009, 06:34 PM	#6
Nords S5, Sport Off, DSC M-track Join Date: Jan 2009 Posts: 527 Casino cash: $1272	Radders, I'd stick with std to be on the safe side. 997RS were pulled at Donington for driveby noise, but my std CSL was fine on full chat...

23-03-2009, 09:08 PM	#8
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	From what I've read weight saving is the only real benefit with a back box - will you really notice one or two bhp?