I have an Apex I boost controller. I the on net direction say to place the boost at 1 bar and the duty at 58%. And that is if you have the modes that I have. Well I bought the car with a chip upgrade in it and that was all i new. I was not sure about anything else. So i think i am a stage three after I added a few things, but with those setting i am running 1.23 bars of boost. My car runs that fine without any problems. Do I have bigger injectores? How can I find out? Right now my secting is at 40% to get the 1 bar instead of 1.23 bars.
