PFR7B or PFR6B sparks for WRX 05 ?
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PFR7B or PFR6B sparks for WRX 05 ?
hi
i think about change sparks in my car because last week i do inspection and sparks looks in bad condition, i have now NGK PFR6B, but i read on forum in USA and in my country for my car the best is NGK PFR7B , so now i dont know witch plugs is best choice , where is different btwin, i dont know somebody fit wrong sparks or this is right , please helpme if someone know something about it.
Thanks
i think about change sparks in my car because last week i do inspection and sparks looks in bad condition, i have now NGK PFR6B, but i read on forum in USA and in my country for my car the best is NGK PFR7B , so now i dont know witch plugs is best choice , where is different btwin, i dont know somebody fit wrong sparks or this is right , please helpme if someone know something about it.
Thanks
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