3inch exhaust
 

I have a 2 1/2 inch down pipe with the same size straight pipe. Im woundering if a 3 inch straight pipe and leaving the down pipe the same size would make a big difference?

Re: 3inch exhaust
 

not really

how much power are you putting down

Re: 3inch exhaust
 

I just finished a custom 3" mandrel bent exhaust on my '99 Civic EX and I can tell a world of difference! If I had a better clutch in my car, it would break the tires loose in second gear but it wouldn't do it before the 3"...I'll take some pix of it and post it up when I get my camera from work.

Re: 3inch exhaust
 

wtf
barely braking lose in second
whats your set up what trany?

Re: 3inch exhaust
 

Im making about around 190 something on 15 psi it runs pretty good pulls hard.But anything i can do to improve i will.

Re: 3inch exhaust
 

190hp @ 15 psi? :l

Re: 3inch exhaust
 

Thought the same thing.

@190hp, 3" might only make you spool faster, not more power.

Re: 3inch exhaust
 

at the crank!

he's got my old car and it made 164.x on 8psi at the wheels...now it's running 15psi and he 'guesstimated' the 190 from what others running similar setups are putting down. maybe his butt dyno is out of calibration :y

here's a link....and btw that's not me in the background.

http://www.dyno-go.com/modules.php?o...&orderby=dateD

Re: 3inch exhaust
 

'99 Civic EX Coupe
Stock D16Y8
GReddy 15g kit @ ~12psi
2.5" KTeller Downpipe
AEM Fuel Rail
B&M FPR
JRC FMIC
XTD Stage I Clutch
3" Mandrel Bent exhaust w/o cat

The clutch is super shitty. It slips like crazy if I get into it at all! I have an Exedy Stage I at my work that I plan on putting in this weekend. Boost is set at about 12 psi but it falls off at higher rpms to about 9.5psi b/c the little 15g can't keep up.

Re: 3inch exhaust
 

yeah 3" on a 1.6 making less than 200 isnt doing anything for power