tuning help or a whole tune would be helpful. i recently put a z06 cam in my buddies silverado which has a 5.3 in it. the cam did wonders in the mid to upper rpm ranges. but now the truck starts hard and idles real rough and rich. has anyone done this mod before and done the fine tuning with efi live? tuning a gasser is nothing like tuning a duramax, so i dont know where to begin. like i said tuning help or a tune would be very helpful.