Need a Recommendation for Spark Plugs
07-08-2008, 09:48 AM
#1
Need a Recommendation for Spark Plugs Check out my sig for engine specs. I am seeing between 16 and 18psi of boost on a 8.5:1 CR. The pistons also have a thermal coating on the crown if that makes any difference. I need a good recommendation in either heat range or specific part number spark plug. I rather have one that I don't have to change very often.
