I haven't yet pulled all the plugs but I will soon (I'm going to get new plugs and install my PEMS at the same time) I told my bro (who works at Napa for 10 years.) how my plugs were white (well one of the plugs) and I said that I was running lean. he said I was fine, white is good. I told him no white means lean, tan means perfect, and black means you're fcuked. Then he said "Well who works at Napa for 10 years" So who'* right?
Also I told him I wanted TR55, he called them junk and said to get AC Delco. Who'* right on this also? I know you might say both are good.