if i put a sparkplug fouler on it will it make the car run different??? i've heard that the cel will confuse the ecu reading incorrect exhaust... will it harm my car at all???i have a check engine light... and what size foulers do i buy from the auto parts store??? is it a 3/16 or a 14mm????

 

good luck.. My TP came with a CEL fix never had that problem.. Did you remember to reset your ECU after you installed it???

 

no... i did it like 2 months later.... i bought a 14mm fouler but o2 sensor is to big and long... i might have to try a 5/8.....