I have a greddy kit for my gsr....its an 18g. My question is, given that my 18g has an internal wastegate...do I need a mbc to run from the wastegate to the vacuum source or is it the wastegate threaded arm that dictates the about of boost that will be run?? please help..

 

internal wastegates are pre-set for X psi. if you want more, you can run the boost controller. if not, you don't need one.

 

Ive also heard that on internal wastegated turbo, there is an adjustment on the actuator arm......you just use the set screw or whatever it is to move it out or in and you can get more boost that way....someone correct me