HitlistCivic01

i see that mostly everyone here has 2.25 in. piping in their cars...but my firend suggest that i should get 2.5 what do you guys think? oh yeh and are you guys using your stock cat? where can i get just a dc cat?

black2k1vtec

2.25 max!! Maybe even consider 2"

SLeePeR012

iTrader: (3)

2.25

HitlistCivic01

any reason for just 2.25 as the max? why not 2.5?

C2i0v0i1C

iTrader: (2)

they call it back pressure i think. the bigger u go on piping the less u have ....not a good thing. still using the stock cat. plan to get dc header and replace cat unless the make a header with a cat on it already. got a lx therefore cant get one yet DC wise

PRCIVIC2001

Yeah get 2.25"

HitlistCivic01

ic...thanks everyone!!

NoToRiOuSxPiNoY

iTrader: (1)

*sigh* even 2.25 might be big for our cars. Remember guys.. our car is 1.7L and four bangers and a stock engine.. i can see a 2. Even preludes(2.0) will only be good w/ 2.25 and ours is even less than that. I would go into detail why 2.5 wont work.. but too long and hard to find words to explain.

htowncivicEX

The only reason you'd need 2.5" piping is if you had a turbocharger.

sicsol

If your just getting the exhaust to sound better and gain some performance without sacrificing drivability, I would get 2.25 in piping, manderal bent of course. I had an apexi N1 full cat-back on my delSol. This is a 2.5 inch system (roughly). The car still drove fine in normal around town driving. It felt slightly sluggish, but hardly noticable. But when your flying around and in V-Tech, the extra bit of breathing really helps. Again, it depends on how you plan on using your car and what you want to get from your exhaust. When I get my exhaust, I'm either going to wait for Apexi to make an N1 system for our cars, or get 2.5 inch piping bent with an N1 muffler. One thing that you should make sure that the piping is manderal bent. That will help the most with exhaust performace. The smother the track inside your exhaust system, the easier it is for your engine to expell the exhaust gas.

just my 2CENTS

sicsolx

HitlistCivic01

yeh i wanna get mine manderal bent but there are non in san diego. anybody know a place near or close by?