yeah i had my car scanned, and the results were a bad maf and bad tps. I replaced the maf with one that wasnt hacked. as for the tps, a few people i talked to said that my problem is most likely a bad isc instead. I havnt replaced either because i wasnt sure which one. i know the scanner said tps, but i thought that sometimes if one sensor is reading funny it can mess up another sensor, causing a cel??? for example, say the ISC was messed up, so the tps wouldnt work right, so the tps throws a code. i wasnt sure which one i should replace. i need to get a volt meter and check the ISC. even when im driving though, the car surges sometimes.

also my egt gauge needle wobbles really fast when the car is surging. could that be just vibrations from the exhaust pipe?