Hi guys, I can not get my car to have really any power down low. I need to constantly run high fuel pressure, about 60psi vacuum on. If I try to set it to 39-41psi it either wont idle or will pop through the intake when I rev it. Once I start to get into the power band of the cam the car turns in to a rocket. Its just the low end torque is not there and there is always a miss down low. I was told by a shop that used to tune mustangs that I probably need a custom chip becasue the MAF is pegged. Do you guys agree? He says he can make the chip by me telling him everything done to the motor and program it from there. What other problem might cause this condition for the car?