i think im going to go with the msd coil and the msd 8.5mm super conductor wires. i am also going to replace my crankshaft position sensor and my camshaft position sensor along with the connectors for each. I think im going to replace my connector for the coil too so everything is new as far as ignition and see if it fixes my 4000rpm problem ive always had. If it doesnt then i guess its the stock ecu.