Sorry To break the bubble. Unfortunately if you need timing control, and have over 600hp, you're looking at the 1200 unit. I know that's not what you want to hear, but the 800 unit was designed for customers who run a HEI, or a CDI box, and have over 600hp. Or at least thats the reason i was given. I wanted to remind the forum that the 800 doesn't have it, as most assume it does.