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ok thanks forgot to mention 3.5bar map comes with turbo and map has calibration numbers printed on it so we're good there is there a way to limit boost pressure on the cst4 so it can run the stock tune until sombody who knows what theyre doing can tune the car

hi I'm new to this forum, and new to turbo gdi cars and tuning. basically I'm a shade tree mechanic, most of my experience is with diesels, (more fuel=more power and you cant really hurt them with bad air/fuel ratios) and one of my customers has a 2007 mazdaspeed 3, which I said I could put an...