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ok, i have a pro design, pcIII and sa removed. with the stock plug, i had the map perfect, from what i could tell. The plug was a tanish color, and the exhaust never popped on decelleration. now with the ngk irradium, the plug is extremely white and it pops on decelleration. i tried to adjust the pcIII for teh hotter plug but i just cant get it perfect.
has anyone else had this problem?
has anyone else had this problem?