TheChiropractor

well i just put new .30 over forged pistons new rings and everything. it was running fine now its just killing my plugs. no service light is on or anything i even changed the 02 sensors just cuz.. at first take off in morning is fine then it starts missing real bad. i put new MSD wires on about 3 weeks ago. there away from headers. would the refresh of the motor put the tune way off? i need a new tune anyways because i dont like the current one. but i dunno what it could be doin