First, it is CROME not chrome (Cui Rom Editor). Like the guy above said, running chipped ECU, why need to run with AFC or SAFC or whatever else? You don't run enough boost for the need of the 3 bar map sensor. If you plan to run only 7 psi, stock map sensor could read up to 9 or 10 psi. Save some money to get the brand name turbo like Garrett, Precision...instead of cheap turbo. Do it cheap, do it multiple times! Do it right the first time. Look like you still need to do a lot more research before boosting your engine!