It was a Dynocom, not a Dynamics, but its calibrated to run similar to Dynamics and Mustangs in this area. Dynocom and DynoJet numbers tend to run higher than others but talking with guys in my area, have confirmed the more realistic numbers from this one. I will be running on a Dynojet this month, and get a A/F reading, for the Dynocom messed up on me last time I was there for a followup after-tune run.