Quote:
Originally Posted by targa72e
Based on the data provided I would say the red line is borderline OK. The Blue line is too lean.
General guidelines
12.2 AFR - Safe Best Power at Wide Open Throttle (WOT)
13.3 AFR - Lean Best Torque.
14.6 AFR - Stoichimometirc Air/Fuel Ratio Value (Stoich)
15.5 AFR - Lean Cruise.
16.5 AFR - Usual Best Economy.
I think you would want closer to 12.5 at wide open throttle. You might also want to try measuring your self with a wide band O2 sensor. Since the one a Dyno Pro is inserted in the tail pipe it is probably not as accurate as one screwed into the exhaust pipe.
john
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Thank you,
I am running a dual wideband, one on each side and they match the dyno AFR.