Exhaust diameter, mandrel bends etc.

[Flaminsam]

Has anyone looked into the flow of a gt/glanza exhaust?

I read somewhere that from the turbo back if you are looking at 250bhp+ a 3" exhaust is a must. Something to do with differential pressure upstream of the turbo (manifold) and downstream of the turbo (down pipe, exhaust system).

Any ideas people?

[funny onion]

side exit

[Ollieh17]

Theres a discussion on here with people running 300+ without a 3"

[Phil]

Bigger exhaust the better on a turbo motor

Though I'm running 2inch ish at 285hp and could make 300 I'm sure without much hassle at all

You could definitely make more with a bigger exhaust

But depends what your using the car for

How much power you want to make etc

For me without an lsd anymore would be utterly useless

Phil

[Flaminsam]

Cheers for the replies people. I guess if the exhaust flows enough there probably is no reason to change it. Just fancied a change at some point.

Charl........I like the side exit idea ;)

[daniel_g]

2.5" will flow enough, also if youre ewg then theres that extra 38mm of exhaust gasses coming out the screamer too