I have had a persistent stumbling problem and I just compared a video of the data log to a video of the car on track. It looks like every time I mash the throttle too quickly, the AFR goes to 9 or even 8:1 and it stumbles for a bit then clears up and goes like stink. If throttle is applied more slowly, it doesn't stumble. What do I adjust and how? EQ Ratio? Enrichment Ramp in? Enrichment Ramp Out?