Just saw they were selling a 3inch cat back now. I watched the clip on their site...sounds alrite to me, what you guys think?

https://www.zzperformance.com/cobalt...=804&catid=155

bump

 

From what I have heard, 3" is kinda big for our cars. Most people go with a 2.25" of 2.5" (feel free to correct me) 3" isn't really gonna help you and you'll lost top end from what I've heard.

Edit: I just found this on their sight.

3. Do I need a 3" exhaust?

Only if you have a header and a 3" downpipe or if you run a turbo. On a car with a header or a turbo, a 3 inch exhaust system will improve top end horsepower over a 2.5 or smaller exhaust system. It can also be used on supercharged cars with a 3” downpipe and stock exhaust manifold but the gains are small over a 2.5” system as the restriction would be in the manifold.



4. I already have a downpipe with a 2.5” exit, what now?

For $50, we can convert your downpipe to a 3” flanged exit. You will be responsible for shipping both ways. If you need us to send a downpipe first, that is also an option. You will be charged a deposit and refunded all but $50 and shipping when we receive your downpipe back.

 

yea i know the LSJ doesn't benefit to much from 3inch exhaust unless your making some decent power, i think putting down 243whp on a hot ass day on a mustang dyno is enough for 3 inch

 

go with a full 5" race exhaust, you should see some decent gains in the rice aspect

 

 

i would go with 2.5" ark dt-s, gmpp touring, or corsa touring.

what are you mods? even with 245, a 2.5 may still be good for ya.

 

well i have corsa touring now, but it broke at the track last week, and im deff not buying it again, to expensive. Mods are 60lb inectors, 2.7, intake, ZZP header/ 3inch downpipe, the broken corsa touring, and a tune.

 

well since you already have/had the corsa, and you have a 3" dp already, go with a 3" lol. looks like zzp is your best bet for this one.

 

yea i figure why not go full 3". The bottle neck can't be helping me to much