I have decided to add a 100 shot to my car, but heres my problem. I had a chip burnt for it about 2 months ago, and it advances it pretty good, how much i don't know. I don't want to buy another chip, so i was thinking of using a MSD timing retard that hooks to the NOS solenoid and when activated automaticly retards the timing, but how much do i want to retard it?? I have heard lots of different things. Is there an easy way to tell how much advance it pulling now so i can set the retard to the exact amount that i need to pull out of it.