I know a cat-back exhaust is everything replaced from the cat to the back.

Now, does a true-dual exhaust run all the way from the headers? I'm asking because I want to buy test pipes now, and a true dual exhaust later on.

Will a true dual exhaust replace the test pipes? Will I be buying test pipes right now only for them to be replaced by a true dual which runs all the way from the headers?

 

A cat-back exhaust using a y-pipe and a true dual system will both bolt on to the cats. Neither replace the cats or test pipes.

A y-pipe back exhaust retains the OEM y-pipe or whichever one you want to buy.


Exhaust system goes in this order:

Header(s) -> Cats/TP's -> Exhaust system

 

Here are photos of headers, high-flow catalytic converters, dual exhaust installed.

 

Thanks homies great answers. I searched everywhere but couldn't find my answer. I guess I better order my test pipes!

 

Ok I'm gonna ask a really noob question and I should search but I'm lazy atm. Wut do test pipes do exactly? Please don't flame me (flame suit on lol)

 

Test pipes replace your cats with straight pipes. More free flowing. Pipes are loud, but tuey make quieter resonated tp

 

test pipes then cats. see the difference? Less restriction but they are not street legal.

 

A$$ To Mouth?!?!

 

 

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