im going with a budget turbo set up and i wanted to know about exhaust? i was thiknin bout gettin a cat back system with 2.5 piping but ive seen other muffers that say FOR TURBO 3 INCHES do i need to go 3 or can i use a 2.5 or does it not really matter

 

2.5 is fine. 3" would flow much better but I doubt you'll notice a difference unless your on a dyno. I'd also say if it's a budget setup and you want to go real cheap, just buy some exhaust piping from an auto shop and get a "Cherry Bomb" muffler or just a resonator or something and slap it on. They are like $19 around here and don't sound too bad on my Civic. I even Gutted the bitch and welded it back together for that custom touch

 

thanx for the info also should i get a hi flo cat. because basically what im doin is jy turbo for now and everythiing else im buyin new so its all set for my swap this winter or so.
and one more this what is max psi on a t25? if i was to max it out what kisd of #s whould i b lookin at

 

Well, a high flow cat couldn't hurt anything. I too just replaced the stock cat in my FI Integra to just a resonator. Just remember turbo's like to flow freely. So the less restriction in your exhaust that you have the better. I mean you could still run the stock cat, but I'd bet you'll feel a slight difference in power swapping it out for something less restrictive.
Also, i'm not sure what the max psi on a T25 actually is, but I wouldn't worry about maxing it out especially if your running a stock block with stock internals. What engine is this setup going on by the way? D15?

 

thats right. maybe i should say what is max boost for my car with stock internals?

 

just dump it out the side by the door 3"

leave stock muff on so cops think u have one.

 

2.5 would be plenty big; might even be able to squeeze 2.0-2.25 in sizes (crush bent 2.5). Dump the cat. Unless you need to take emissions, just ride without it.

A T25 can flow up to 20psi, on stock internals I would leave that thing at 7. Engine managment is the key here, don't get too crazy.

As far as a muffler, get whatever flows the best/sounds the best. I've never been too much of a fan of those cherry bomb glass packed tubes, but if it works for Trance, could work for you. I can tell you installing a flowmaster on a d16 still gives you that "rice" sound.

BTW Trance, got an audio clip of your exhaust setup?

 

lol quadnie I'll try to get one somehow. It's on my NA Civic. honestly it doesn't sound ricey or loud. It's quiet and deep even though it's just a hollowed out muffler casing.

 

doin the emissions befor the set up. what #s would i be lookin at at a round 7? beause im lookin for as much as pos. for a comfortable daily.

 

Unless you're planning on flowing huge numbers, under 3 inches is fine. Lose the cat if you can.

Search around for numbers on your setup(7 psi, d16 right?), but I'm gonna throw out 180WHP if you tune it right.

-Brett