[cbirgl]

I don't mind the questions - keep them coming. I have a full exhaust, but I think it is only 2.5". For turbo cars the bigger the exhaust the better, to any point. You may lose some bottom end torque going bigger, but you gain horsepower up top. There is no need to have back pressure like in non turbo cars because the turbo creates back pressure for the head, not the exhaust. After the turbo you want to get all of the exhaust out as quick as possible.

I sent you a PM.