Proform 850 dialing it in closer

Make sure you run it hard to get the real reading out of the ground strap.

No air = lower compression the eng sees. Even tho i have a ratio of 12.8. I Want to try some pump gas 91 and see what would happen. But once again, i would drop timing down to 30-32 to start my testing. I'm kinda chicken, so i haven't tried it yet. way more" to do" things on my list above that one.

It may like a little bit more timing......but don't be surprised if it don't.
The only, real way to test the timing is at the track or on the dyno. Plug read could tell you if your any wheres close.