Which flows better? **best guess**

[DrLove'sKuDang]

in light of my recent dyno tune, im curious about something. just how much better will a 2.5" exhaust flow over a 2.25"??

with the same muffler, which would flow better?

-2.25" piping w/no cat
-2.5" w/cat

[Blaize]

stock cat or gutted one?? I would say with a stock cat and 2.5 it would be about the same you might have a little better lower end cause of back pressure with cat. With 2.5 and no or gutted cat, or even a catco high flow, you would probably see a noticeable top end increase and a little diminished lower end (not too bad really)

[PRIMOCB7]

2.5in w/ cat
*being its a high-flow cat*

[DrLove'sKuDang]

stock cat or gutted one?? I would say with a stock cat and 2.5 it would be about the same you might have a little better lower end cause of back pressure with cat. With 2.5 and no or gutted cat, or even a catco high flow, you would probably see a noticeable top end increase and a little diminished lower end (not too bad really)

it would be a 2.25" with a testpipe/resonator
or
2.5" with carsound cat

[NAiL05]

Id say 2.5" with carsound. Thast what im plannin to run.

[starchland]

2.25 no cat

[h22sparkle]

I say get a 2.5 this is from my experience you can get 2.25 piping and atleast when you go to 2.5 you wont have to chance the muffler at all. And it flows more.

[DrLove'sKuDang]

I say get a 2.5 this is from my experience you can get 2.25 piping and atleast when you go to 2.5 you wont have to chance the muffler at all. And it flows more.

i have 2.5" already. i was just wondering if my current exhaust hurt or helped my recent dyno.

[h22sparkle]

i have 2.5" already. i was just wondering if my current exhaust hurt or helped my recent dyno.

no your straight