Q-Jet APT Dyno Testing:

[455 Formula]

I was fooling around with A/F ratios on the DynoJet today and discovered that (1) full turn of the APT on my Q-Jet (at 2500 rpm under load) would change my part-throttle A/F ratio from 13.5 to 15.0

That's a big jump for one little turn.

Hope this helps....Robert