Hi all...Getting ready to change the plugs, has TR6's and I would really like to try Autolite's...Car is pushing around 13lbs boost and putting down 514 RWHP....I am wondering if AR-94's would be better as they are a cooler plug or just stick w/ 103's...one more question, are you guys running the basic 103's or the XP 103's ? Also, has blower cams so idle is a bit lopey...would the cooler plugs make this worse?
