Just checked my timing with my new ACTRON Digital Timing Light. This thing is great. I made the shunt tool with a connector that I cut from the distributor of a 93 Chevy 1500 at the Junk yard. My timing is Text book with 10 degrees at initial and 28 degrees total at 2500 RPM. Now I'm curious as to how far I can go up and not ping. I have had no issues with regular 87 octane gas but usually run 89 or 93. Any one tryed taking it to 14 degrees initial for a total of 32? I pull a lot of skiers and just want more hole shot and a bit more top end. Thanx for your advice.