its all the tune. I had a fmu/check valve setup in my car then i got chipped and tuned. When i had fmu it ran normal when not in boost. Now it hesitates slightly when around 1200-1800. It kinda boggs down. I just need more tuning time. i was on the dyno for 30 minutes..so.... once i get 440's, a fpr and a clutch, i'm gettin retuned and i'll post the difference it made.