first off the car had no brakes when i received it prev owner said it needed brakes little did i know they were no longer working. THANKS ALOT! so she got 4 new rotors 4 new calipers, pads, power booster and master cyl. now she will stop very well. anyway i ran 10psi with no intercooler and a bosch bov stock injectors for many months on a fairly good tune average mpg was 27 or so and power was good. it was not long before good was not good enough and project red rocket began. starting with all poly bushings and tokico suspension.