exhaust Question with boosting a b18a1...

[teh_mugen18]

i sorta want to run straight pipe when i turbo my car. My exhaust shop said that ill need 3" piping all the way through. :thinking: (personally, i think thats a lil bit too BIG....) But anyways.. ive got a couple of Q's.

first is, how is emissions gonna work when im running straight pipe?? will it pass or will i have to re-install my stocker muffler and then turn the boost down before i go test? will i need to save 2 fuel maps on the AFC, power vs emissions?

second is, who makes a 3" diameter catalytic converter that i could use on a boosted app?

[Barefoot]

you wont pass emissions without the cat.

magnalow makes a 3" hi flow cat
http://www.slowboyracing.com/estore/product.php?productid=1466

another option to think about is a cut out.
http://www.quicktimeperformance.com/QTEC/index.php

[teh_mugen18]

lawl, i meant..straight pipe with a cat...

[Bruce Leroy]

If you dont have crazy power goals you dont NEED 3in piping... Your exhaust shop is trying to make $$$ off you...