What kind of cat-back exhaust should i get for my 2000 civic si. I already have Aem CAI,DC Sport 4-2-1 headers, ITR intake manifold, and Aem cam gears. Any suggestions will be good.

 

they all perform about the same...pick the one you like the best

 

I have selected the following: Greddy Evolution and Apexi N1. which out of the two will give me the most output wiht my current set-up.

 

Apexi N1...nice and loud

 

All I can say is that in my opinion the N1 is less restrictive than the EVO.

 

I'll repeat what DragIIcivic said...they all perform the same...

With your current setup, all the exhausts will basically be the same...some will net 1-2whp more...not a big diff...and just cuz exhaust A nets 2whp more than exhaust B on Bill's civic doesn't mean it will do the same (it might even turn around w/ B more than A) on Ted's identical civic. Remember also that N1-style exhausts like the A'pex N1, Tanabe Racing, 5Zigen Fireball/Miracle fireball, etc. are MUCH louder than the traditional large-canister exhausts. The Greddy Evo will be a lot quieter than an N1. Keep those things in mind. Also take into consideration what your future plans are. If you plan on going hardcore NA (dunno what civic you have...so either mod your b-series or swap one), you'll want a 2.5" system...and if you plan on going FI, a 3" would be ideal.

 

i have a Thermal Research & Development....and i love it!
you can get it at http://www.landspeedracing.com

 

I agree however, You are in california get one with a CARB badge!!!