i have a hesitation threw out my power band now from 3k to 6-6500 rpm. now it just started the other day, cleaned the k&n checked for any couplers loose or open , nothing. have good boost pattern but little like skips and power loss . could it be some sensor? tps? i had a t2 with a bad tps but no power loss. idles fine and has 20 on the vac . i have ngk plugs with an msd , pettit ecu with boost control at 12 psi. this seemed to kind of happen after i ran it at 14psi but it progressed slowly i noticed no power loss the day after i ran 14psi just a diffrent sound a bit deeper then usuall. now a couple of days later have some power loss and hesitation. any help very appreciated.