swappers, what did you do for exhaust? Options

[brianforster]

now we all know that 3" is pretty standard for all our swappers.

what did you do for exhaust? custom from a shop close to you? make it on your own?

whatd the shop quote you?

how much was it if you did it yourself?

looking for general price quotes here, trying to plan out the finishing touches of the swap and the only exhaust shop i called said "theyd have to look at the car".

to cut down on costs i think im going to buy my own cat and muffler from summit (43 bucks for cat, 18 bucks for muffler, summit turbo muflers for the win!) i just wanna know if you guys have any idea what it will cost. i already have a downpipe.

i tried searching, but everyone just says they have 3" exhaust, not where or how they aquired it, and since they are all custom, was wondering what everyone did for it!

thanks as always
-brian

[scothaniel]

That 3" exhaust is better then 2.5"
I was wrong when I said that 2.5" is only good for 400 HP, now I'd say its fine for sub 300 HP range.

It does go along with velocity and cool-down expansion effect I mentioned earlier, since replacing the rear section with 3" gained a good amount of power and replacing the turbo back didn't make much a difference. Unfortunately the dyno graphs on his web site are for buschars kits - which includes more then just the exhaust changes. I'd like to see what the effect was on low/mid range torque with the larger DP.

This post has been edited by scothaniel: Mar 12, 2006 - 9:31 PM

[jgreening]

It does go along with velocity and cool-down expansion effect I mentioned earlier, since replacing the rear section with 3" gained a good amount of power and replacing the turbo back didn't make much a difference.

In this post, I am playing devil's advocate for purposes of discussion. Lets assume that there are no factors in these runs like improper cool down times, variations between runs, margin of error, etc. Under your theory, wouldn't the power have been less with the 3" downpipe since the exhaust gas velocity would have decreased? I recognize that it only made 2 more horsepower with the 3" downpipe but the fact that it didn't lose hp seems to contradict your theory. The big 16G is not exactly a large turbo.