Re: Exhaust Opinions
 

a 3.5" pipe has about 27% (26.530612244897952% :wink: ) more surface area than a 3" pipe...

Re: Exhaust Opinions
 

So?

Re: Exhaust Opinions
 

Not that I'm as deep into fluid dynamics as you; but isn't it good to at least have some back pressure on a turbo car?

Re: Exhaust Opinions
 

The turbo provides more than enough back pressure. You want as little as possible after that, it is an NA car that will need some back pressure. And velocity does nothing for the exhaust once it is out of the turbo unless you are trying to shoot it out fast to act like a jet engine and propel the car :P

Re: Exhaust Opinions
 

The less exhaust after the turbo the faster it spools and the more power it makes. The best turbo exhaust is none at all.

Re: Exhaust Opinions
 

OK then, custom 3.5 for me it is.

Thanks for the opinions and info.
-Mike

Re: Exhaust Opinions
 

Since nobody else asked, what turbo is on the the car that you need more than a 3" exhaust?

Re: Exhaust Opinions
 

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Re: Exhaust Opinions
 

Gt45r :spin:

Re: Exhaust Opinions
 

You'll have to post some pics up when it's done! Do you plan on running a muffler? I think old man Hill's is all just straight 3.5", maybe a resonator. Pretty loud none the less!

Re: Exhaust Opinions
 

It won't be as "bling-bling" as everything else 'cause I'm not crawling under there to clean it. ;-) Will have a nice muffler and tip though.

Re: Exhaust Opinions
 

Why not one-up the supra and diesel truck guys?! Go 6" or go home.

Re: Exhaust Opinions
 

Well I guess I could add another tunnel down the center of the car. :tongue:

Re: Exhaust Opinions
 

Smoke stacks!
http://www.puredieselpower.com/catal...inchbacksm.jpg :whoo:

Re: Exhaust Opinions
 

Right Through The Power Hump!!!!!

Re: Exhaust Opinions
 

OK, here's what's on the way.

Borla XR-1 race muffler 3.5 in/out
Dynomax Bullet 3.5 in/out resonators (2 of them)
3.5 inch S/S piping, bends, etc.
3.5 inch v-bands, etc, etc.

Should be fun.

Re: Exhaust Opinions
 

Where'd you pick this stuff up from? What grade of SS are you going with?

Re: Exhaust Opinions
 

I am sure it is 304SS, that is the main thing available. Looks like a nice setup although the 2nd resonator might be overkill. The Borla's sound damn nice, wish they were cheaper!

Re: Exhaust Opinions
 

Everything is coming from Jegs. 16 gauge 304s/s piping. The resonators were pretty cheap, so I got two of them. Basically I'm going to build a duplicate of the Apex-i N1 system I have in a true free flowing 3.5 inch set-up.

Re: Exhaust Opinions
 

Well the exhaust is done. 3.5 inch from the flex section back. System is almost completely straight line until it does a slight dog-leg under the rear end. There are almost no angles involved with most of the system, only slight tweaks that are way too small to even consider trying to cut and insert angled pipe. Glad I went with two resonators. I would not recommend using only one unless you want a really loud car. It's about the same volume as my old APex-i N1 system, but with a much deeper tone, almost has a Flowmaster quality to the tone at times. I'll try to get some pics posted this afternoon.