Stock AFM, removed air screw, Apexi AFC - Who's done it???

87witmoreboost

Officially HKS'd
Aug 27, 2007
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New Hampshire
I got my wideband gauge and AFC Neo in the car this week.

This weekend I am putting in a stock AFM with the air screw removed (to avoid chance of fuel cut when I set the MBC to 13psi). Has anyone done this and got a good tune with the Neo? I would think I will need to add fuel across the board to get proper AFR's. I was thinking of tuning the high end (pull some fuel) while on the stock AFM so that I have good AFR's for power/safety, THEN install the new afm and add equally on the high and low throttle settings on top of the existing tune. I don't see why I couldn't add fuel down low and up high and let the unit interpolate a linear fuel curve (er, line). This would assume a linear increase in air flow, which their should be.

Correct me if I'm wrong and if you've done this before, I'd appreciate any insight.