So if you didnt already know, my car would NOT go past 4k. So i replaced the TPS, I can tell a difference in that the low end hesitation is gone and the car will go over 4k under very light load. The problem is, the minute i try and give it some gas over 4k, it bogs and backfires...A LOT! Of course my secondaries are suspect, but does it matter what load they are under, because like I said theyll exceed 4k under a light amoiunt af pedal pressure, its when i give it the slightest bit in excess of that.. anyone help me out?

 

tuneup?? I'm guessing OEM sized secondaries?