Is any one running aftermarket coil packs on their 15-17 GT if so what's a good manufacturer, I was looking at the granatelli 28-1815cp, but I don't know that much about them. Thank any info will help
I am running MSD blaster coils. I got a hell of a deal on them so that's the only reason I got them. Ran them for 3000 miles NA and 10, 000 miles boosted. No issues. Gains....who knows.