To be honest mate I've never had it near a rolling road or anything like that but I fitted the dark green injectors, 3 bar map sensor, stage 3 motorsport developments chip and -31 actuator and full mongoose and from memory the boost I set to 26psi. I had to set the fuel and idle up at work on the gas analyser to what msd said and it goes well for what it is. I'm planning on doing a bare shell resto on it one day so will prob fit a larger turbo and that point and then have it set up by msd on their rolling road