Ive got the predator tuner, and right now I'm advanced about 7%. Im going to back the timing way off, and it even calls for some retard for a 100 shot. I was just wondering, In the predator tuner, what would 2 deg retard be in the percent? It has a -40% to +10 % range. No idea what that is in degrees.

 

Next question, is it that important to get new plugs for a 75 shot? Im planning on getting them soon, but now that the kit is in im eager to try it out. Should I just wait, or is it cool?