Twin 2.5 Or Twin 3 Inch

[P_BA_XR6]

what do you guys think I should go for, im just thinking get a 4 inch dump pipe then 4 cat to a twin 2.5 or twin 3 inch

[xr6t4life]

depends how much power you are going for if its really big numbers get the twin 3" if its 300-350rwkw twin 2.5 will do fine its probably cheeper to.

[unclewal]

I went 4inch dump to 5 inch cat to twin 2.5, quiet and will be enough to flow plenty of horsepower and its quiet (well quiet enough)

[dre]

Really does depend on what your end goal is.

[f6mark]

go the 3.5 mate.

[Trough Lolly]

haha neither will work well on his NA

[g6t]

twin 3.5 or twin 4: some thing diferent , u get your backpresure from the turbo after that dozent matter 2 much.

[dre]

you have forgotten the need for velocity.

The op's car is non turbo (or his sig is out of date). the thought of a non turbo with twin 3" is as bad a v6 Late model camira with a chev badge.

[.BLKPHN.]

I have a twin 2.5" cat back for sale or a whole zorst

[arronm]

You guys are soft go twin 4 inch, anything less is gay.