I have an evo viii with stock boost for now, no exhaust leaks, no vacuum leaks. The car is throwing pending codes for the map sensor (no engine light on dash). The car is stuttering and hesitating. Codes are :136 141 507 69 136p 141p 507p 106p 69. That's including o2 codes which makes sense. Anyways the car just normal driving backfires and just doesn't run smooth. The car under boost just has a huge constant backfire issue like a two step launch. Assuming it is throwing those codes I'd say replace map sensor but I wanted opinions. I could buy the 3 bar map sensor but that requires tuning correct? So I need a stock map sensor? Just need some input.