yo guys im planning to buy a greddy cat back exhaust for my 2001 prelude, is it a bolt on and ready to go? do i still need to weld it something like that? k thanks!

 

Bolt on

 

no you have to weld the ehaust to the cat for better flow!!

 

just bolt it on and go your gonna get the same flow know matter what

 

if you were going to hack up a cat back exhaust to weld it on then you should just get a universal muffler and custom piping. The whole point of a cat back is that it's basically the same thing but bolts up into the stock location. Besides, isn't there some kind of regulation prohibiting welding within a certain distance of the cat... iirc the heat from welding isn't good for it??