Suggestions for exhaust for 965 3.3 please

[nonegreen]

As it says on the tin i am thinking of replacing the exhaust, anybody got any good ideas as to supplier, keep cat or not and cost please

[ultra violent]

Ditch Cat. 9M does a decent set of headers. Or you could try GHL, but they may need modifying if you up the power levels at a later date. If you change headers check your boost afterwards. Some headers will cause boost to rise...

[ninemeister]

Headers on their own or cat bypass on its own do not have a problem, but any make of headers (9m/GHL/B&B) with cat bypass = boost creep. Therefore if you go the whole hog (for better response/torque/power) and replace everything from the heads to the tailpipe, budget for a decent wastegate in order to keep everything in check at 1.0bar or less.