Since You Already Spent So Much Money I Would Get New Ovp Relay As They Control Many Engine Functions And Just Plug In. They Are About $65 And Have Updated Circuitry. Make Sure Your Motor Mts Are Ok. I Speak From Experience. Often Plugs Go Bad Quickly And Make Sure You Replace With Bosch Coppers. Nothing Else. Good Luck. Ours Drives Like The Beast It Was Meant To Be. Eats Up Spark Plugs, Though.