240 +T... 2.5 or 3inch Exhaust?
Just wanted to hear some peoples experience with upgrading the stock NA exhaust on a 240+T.
At the moment I'm running a 12b on an 80's manifold - 3" downpipe to stock na two muffler system (2.25 inch?) and have noticed it's quite a restriction. It's also generating huge amounts of heat. So much so that the manifold can be seen glowing red if it spends a prolonged time boosting upwards of 7psi.
I plan to upgrade my 12b to a 16T and have already sourced a 90+ manifold. My question is whether a 3" cat-back would be overkill? Plus there seem to be some affordable bolt-on 2.5" options, and a custom 3" job would be costly. Would I notice much of a difference?
EDIT: Should mention the car is an auto and I don't plan to run much more than 12psi. Not after crazy performance