Was driving to work and started running rough almost like a misfire and way underpowered. Got it home and so far I have replaced (in order) the cap,rotor, plugs,wires,CPS,o2 sensor, cut off cat, TPS,MAP sensor, fuel filter, intake exhaust gasket, tested resistance on injectors, timing chain sprockets chain and tensioner, oil pan gasket, distributor and checked ground for harness. I'm out of ideas Any suggestions