Ok i was playing around with the predator doing some datalogging. I had my stock tune and under the SPRKADVANCE it was reading like 21 degrees "sparkadvance" all the way to redline. With the " Performance Tune" loaded it would read 28 degrees all the way through. what i dont understand is. Is this TOTAL timing. Which im guessing if it is saying 28 it means 18 degrees advanced? Im a little confused on this since i logged my friends Bullitt today with a Vortech and a Steeda tune. The sparkadvance read 14-15 degrees all the way through where as mine was 28. Thats a hell of alot of timing isnt it? Or am i looking at this the wrong way?