turbo tuning, whats next?

richj · Post by **richj** » Mon Nov 30, 2009 2:53 pm

Hi all,

My k reg 480 Turbo is finally running well!

I have a richmod that runs nicely.

I'm wondering what the next step in tuning should be?

Take stage 0 (full service etc) as a given.

I don't really want to turn the boost up any higher.

Is an exhaust system up next?

grafi · Post by **grafi** » Mon Nov 30, 2009 2:57 pm

Well, if you dont want turn the boost up, a nice exhaust system would be logical. Or improve the running gear, lower the suspension, etc.

richj · Post by **richj** » Mon Nov 30, 2009 3:06 pm

what sort of gains are there from an exhuast system?

grafi · Post by **grafi** » Mon Nov 30, 2009 3:24 pm

richj wrote:what sort of gains are there from an exhuast system?

Well, -if you choose well-, first of all the sound.

Second, -if you choose well- a slight increase of power.
Third, -if you choose well- a nice optical tunning.

grafi · Post by **grafi** » Mon Nov 30, 2009 3:26 pm

http://www.youtube.com/watch?v=bnBjFRu8esI

richj · Post by **richj** » Mon Dec 14, 2009 5:14 pm

Any idea how much power a custom exhaust could give?

I have a richmod already, so guessing the extra exhaust gas needs to go somewhere.

Anyone here done this already, can provide some pointers?

I'm a little worried the off boost power will suffer.

Any suggestions of companies to do it? I'm based in the south.

I'm looking at something like

http://cgi.ebay.co.uk/Volvo-480-GT-Stai ... 4a9ce6ce4e

for Ã‚Â£300 I would want some more performance

dubstep · Post by **dubstep** » Tue Dec 15, 2009 11:54 am

To be honest Ã‚Â£300 for a stainless exhaust is cheap! I think if the 480 was more popular there would be companies like HKS & Mongoose charging in the region of Ã‚Â£550+ for minimal gains.

If you could get your hands on a stainless manifold, de-cat and exhaust then i can imagine you would get a noticeable gain. Im not sure how much extra bhp i got when i put all of the above on my Vtec Prelude but the throttle response seemed allot sharper and the improved engine note made it seem faster

Quagmire_GT · Post by **Quagmire_GT** » Wed Dec 16, 2009 1:17 am

last stainless steel system i got was for a golf GTi custom built by powerflow cost 580

aint priced up for the 480 yet

dubstep · Post by **dubstep** » Wed Dec 16, 2009 12:03 pm

ye the last one i got custom built was on the civic, that was near enough Ã‚Â£300 and wasn't amazing!

If id had the cash id have happily spent nearly Ã‚Â£700 on an HKS Silent Flow!

Quagmire_GT · Post by **Quagmire_GT** » Thu Dec 17, 2009 12:20 am

hint hint cough cough someone but his fookin motor haha

Derek · Post by **Derek** » Thu Dec 17, 2009 10:07 pm

I got a custom stainless steel exhaust from the turbo back with a twin exit back box (one each side) from c+c exhausts in hillington glasgow for Ã‚Â£300 with a life time guarantee.i had them build exhausts for all of my previous 6 cars. there work is amazing and if any thing go's wrong with it they fix it for free

richj · Post by **richj** » Thu Dec 17, 2009 10:17 pm

was there much improvement in performance? Were you running stock boost?

Derek · Post by **Derek** » Thu Dec 17, 2009 10:39 pm

no i have rich mod ecu and when i got the exhaust put on the turbo reached full boost about 400 rpm sooner and holds it right to the red line where as before the boost used to start to drop off at about 5000 rpm and buy the time it got to 6000 it had dropped about 5 psi

richj · Post by **richj** » Fri Dec 18, 2009 10:38 am

thats the sort of good news I was hoping for.

It seemed logical that with higher boost, there would be more exhaust gas, and therefore a bigger exhaust would make a big difference.

Nice to have it confirmed,

Thank you!

richj · Post by **richj** » Fri Dec 18, 2009 10:40 am

I dont know anything about exhaust specs, but any chance you could give me a run down of what you had done? size pipe etc.. sports cat? Sort of stuff I can say to an exhaust company and get something very similar to yours,

cheers

Derek · Post by **Derek** » Sat Dec 19, 2009 1:07 am

well i don't know what type of stainless steel pipe they used but the exhaust is 2.5 inch from the turbo to the back box with no cat. the back box is mounted side way like the original one but is a straight through type and has a 2 inch pipe coming out of each side with a 3.5 inch inward rolled tip on each side. apparently the down pipe is the most important bit to get right.

ted clutch · Post by **ted clutch** » Sun Dec 20, 2009 11:34 am

i have a cat back system that sounds similar. i havent fitted it because there is no join to the cat but could easily be made. its been outside all winter and is still polished shiney so its propper stainless. magnet slides right off as well. maybe open to offers.

richj · Post by **richj** » Sun Dec 20, 2009 1:00 pm

pm sent