Originally Posted by
BSeriesTurbo
well, while I would not rule out a coil, just remember that any time you up the anty on the boost and fuel, your increasing the cylinder density and pressures. Sometimes its more than the ignition can handle and the spark cannot bridge the distance on the plug.
You will have to start gapping them tighter for high boost.
And I was only out for puttering today, wasn't trying to go full blast, just chillin and cruisin, especially with the weather and 40 million pounds of pea gravel...
I gapped all those plugs to .028 like audi calls for - and they're a heat range lower. I was told onetime that platinum plugs weren't really meant to be gapped, but I dont know why they wouldn't and others would.
I guess I could bump the gapping down to .026 or .025? Either way, the coil is ordered so i'm going to replace that first. If I still get any sort of misfiring codes i'll go with a new set of plugs and gap them down a more.