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Roger Ramjet · 07-10-2009, 10:41 PM

I always take my own weather station to a dyno session, ask for uncorrected numbers, then apply the SAE correction factor myself.

These numbers don't match: 95.36F, 30.36 InHg, 43%RH produce a STD Cf of 1.0427 not the 1.03 as shown. Now if we assume that a 1.03 Cf was used the measured number would have been 304.31 HP.

Applying the SAE Cf gives 305.5 HP - very poor!

Although the temperature was high this day so is the barometric pressure. The STD Cf would give an overly high HP number but the SAE Cf is still believable.

07-10-2009, 10:41 PM	#140
Roger Ramjet Motor Head Drives: CTS-V Join Date: Feb 2009 Location: So MD Posts: 494	I always take my own weather station to a dyno session, ask for uncorrected numbers, then apply the SAE correction factor myself. These numbers don't match: 95.36F, 30.36 InHg, 43%RH produce a STD Cf of 1.0427 not the 1.03 as shown. Now if we assume that a 1.03 Cf was used the measured number would have been 304.31 HP. Applying the SAE Cf gives 305.5 HP - very poor! Although the temperature was high this day so is the barometric pressure. The STD Cf would give an overly high HP number but the SAE Cf is still believable. __________________ History Camaro's: 83, 93, 95, 98, & 10.