i was creeping along on the freeway and gave it full throttle and I had a huge hesitation then the car just went like crazy. I also have a slight hesitation a little less then 1/4 throttle. Do you guys have any advice? My car is chipped (apr 91, 93) Milltek 3in exhaust dv's and k&n. It is a tiptronic. I also went and drove it tonight in 93oct mode and it didnt seem like it was boosting like it should i even use fuel additive to raise up the oct. Let me know what you think.

 

Check for stored codes, check for boost leaks, (DV's & TBB), clean your MAF, check plugs, etc.....