so is their a general law on how much you can port out of exhaust peices mainly the wastegate hole, and the turbo elbow? and where would be safe to port up to... looking for mm guys.. thanks
1

Well, it isn't really how much material you remove as much as where you remove it from.

hey nice to see you back polygon.. i was hoping for more response but im porting the turbine elbow, and the waste gate hole.. and possibly the turbine inlet where it hooksup to the mainflod and vise-versa..any tips will help
1

Make sure that whatever you port, remove all the high spots. You would want it as smooth as possible.