This muffler shop around my area said they would bend me a custom pipe from the cat back either with a high flow mufler or stock muffler for 109 bucks .. are there any gains in getting this done ? i heard that integras dont get much out of a catback i have a 2k ls with just a aem short ram

 

You could see nice gains or nothing at all. Depends on what diamater piping they use, how they bend it, how they route it. But it is cheap.
gmoore

 

what would be a good diameter 2.25 ? whats the stock diameter ?

 

I always here people say go custom.

But I what I think: Apexi, greddy, and all those exhaust company's spendy lots of money testing exhaust systems for best flow.

I'd think custom would not flow as well, unless its exactly like apexi's or greddy's.

 

get the shop to build you a custom catback if it will be madrel bent.