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Discussion Starter · #1 ·
What A/F ratio numbers are the targets? On Innovate's site, on the fourstroke auto engine they're tuning, they're shooting for low to mid 14s at idle and at wot mid to high 12s. Looking at the Bikeman, Dynotech, and D&D dyno sheets I'm seeing A/F ratios of 11-12 at various rpm ranges equating to BSFC's in the low to mid .60s. Is there a playback function? When do you know you're approaching a burndown or seize?
Do the same target A/F ratios work on two-strokes as four?

Thanks,
Pat
 

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Most have playback features.
Target a/f for two strokes may need to be adjusted to match dyno specs. reason being some techs believe that extra hydrocarbons in two stroke exhaust alters reading by 1/2 point. So 12/1 is actually 12.5/1.
 
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