[Dan03mach]

To really see what your car likes as far as timing you really need to read the plugs of all cylinders to find which one is running the hottest, the heat mark on the ground strap. That heat mark will let you know if you can advance or need to back the timing off. You need to do this either on a dyno or street where you can kill the motor at the top of the pull and pull over to pull the plugs out or if you found which cylinder is running the hottest just pull that single plug out and read it. Remember the plugs have to be need on every pull to get an accurate marking on the plug. Doing this on the dyno would be easiest.