Ok, after head and cam install.....car has been running ok....but I am running into tiny issues here and there. When I had mycar dynoed at Protech, 3 of my spark plug wires were sh*t and I think they were arching. I was running NGK plugs with a hotter heat range. Last time I went out, my car seemed to run a bit on the rough side, today, I checked the EGR valve, clean as a whistle....checked the plugs, black as can be....my question is.....can it be the tune or what? Vince tuned my car but it was running like crap due to the wires, and now that I have good wires, 8.5mm's and new plugs....she is running very rich. I am not sure what it can be.....maybe a vacume leak or something? any ideas?