Brand new timing belt, timing is dead on, brand new head gasket, new plugs, wires, pcv, Fuel Pump, air filter, fuel filter, breather, IAC looks original, (we cleaned it out)(we havent fully ruled out the IAC), MAF unsure about, if you unplug it car seems to idle worse. NO CEL when unplugged, which it should kick on when unplugged. Vacuum problem, highly doubtful, we triple checked all lines and all are in good shape, even the T that is under the Coil Pack. If vehicle runs (which seems worse) with MAF unplugged is it bad? or is it ok. We been bangin our head with this motor past few months.