Hi all ok I started with cyl 1 cyl 2 misfire to date I have tore down top end heads planed valves lapped new seals complete gasket set rocker covers cleaned inside new pcv valves new coil packs new Champion plugs new leads injectors cleaned tested for flow new o rings. Cyl liners inspected no ridge at top liners not moved in block new gas in tank oil changed coolant changed cats removed (patched frame) straight pipe in place of cats spacers Instaled censors reinstalled front and back started right up idles perfect quiet engine better than before. Now codes are back same as before service engine soon light flashes on driveing will not accelerate above1750. Any thoughts appreciated