Hey I recently installed MBC and Fpr from Joe P into an unflashed 2003 MSP I have Injen CAI and boost guage and A/F guage. Car ran unbelievable for about 2 days today I was getting bucking almost or like fuel cut bad at about 10 pound boost in 3rd , 4th and 5th gear around 3500-4000 rpm came home turned down boost to 8psi and its gone I want to be able to run 10-12psi but cant due to bucking HELP PLEASE