So my car drove fine for a few days after my mechanic tightened up all my MAF stuff, until yesterday. Coming home from work it started with the car wanting to die turning right with just a little bit of throttle. About 3/4 a mile down the road the car started to miss and the check engine light would come on and go back off. At one point the RPM's jumped up to 3000 and stayed there like it was stuck in gear, then finally shifted. I get into my subdivision and all of a sudden when I give it some gas the car just boggs down REALLY bad, to the point of going no where. Then I hear it the exhaust pop like my 67 Pontiac did when it had no compression in one of the cylinders when I would give it gas. When I pull in the parking lot the car would want to die then the RPM's would come back up and the car would surge forward some then drop back down. I'm gonna take it back down to the shop Monday.