Originally Posted by sensei
In my opinion, the other systems listed don't even come close to the Hondata in flexibility. The VAFC is better than nothing, but you cannot adjust fueling without affecting timing with it because it manipulates the map input signal. You must be able to manipulate fuel calibration and ignition timing independently if you want to get a serious tune going.
Exactly, hope you're not trying to scrimp on a boosted setup with a VAFC as "fuel management". The amount of timing under boost with an AFC hack setup makes me cringe. In the lower boost ranges(1~5lbs) you can be running as much as 40 degree's of timing advance, above that it tapers off to somewhere around 32-ish if you top out the MAP sensor at 11.5-ish PSI.....Which is still way to much timing for a street car on pump gas, or even high octane with pig rich tuning.