Is there any Phoenix area mechanics or somebody that knows RX8's inside and out? I failed emissions because of the P0301 code the car has. It misfires for a minute or so when engine is cold then runs fine. This happened after replacing radiator. Mechanic has tried a bunch of things and now wants to change coil packs. Anyone with experience, will this solve the problem? This motor only has about 25k on it. Im not a car guy which is why i was looking for an RX8 expert in Phoenix, AZ. Please help! My tags expire this month.