3in HKS Hi-Power

[Geronimo77]

Ive got my hks hi-power exhaust, and im building my motor and want a 3in all the way back exhaust.
Can i just cut the 2.55in pipe off and reweld 3in pipe onto the muffler with the same bends and everything?
I love the cans and dont wanna lose them wanting to make more power

[numbnuts240]

why not sell your exhaust and get another one that's 3" to begin with?

[evildky]

if you run 3" pip into a 2.5" muffeler you gain nothing! the exhaust will only flow as much as the most restrictive aprt and for the highest restriction to be at the rear you'd have a real problem, the term bottle neck mean anything to you?

why do you want 3" exhaust? what size turbo's do you have? unless you are sporting a pair of T3's I'd say leave the pipes alone