Hey NewHawk that is a pretty good looking graph. Nice smooth arcing torque curve. Looks like it's tuned well.
You will certainly feel the added power when down at sea level especially if it's a cool dry morning.
If he saved the dyno run in his computer, your tuner can print that exact same dyno run in "actual" or in other words, "uncorrected". He just has to change the setting before he prints it out. Then you could compare the SAE #s to what it was actually giving you under those high altitude conditions.
Next you could compare the difference in the SAE to Uncorrected/Actual. That is how many HP you will gain at sea level if the same temp/humidity/pressure existed.
This making any sense?
SAE is The Society Of Automotive Engineers. They set all sorts of standards so testing can be reliable and repeatable. They have an agreed upon correction factor or algorithm to take into consideration, how good or how bad the air is, for making power. STD is yet another method to a similar end(not sure where it came from but it is used quite frequently). The whole idea of either of those correction factors is to allow better comparison from place to place or from time to time or from one weather condition to another.
The "Actual" power an engine will produce will vary with the weather. Hot/humid/low barometric pressure days are poor for power because there are not as many oxygen molecules in a cubic inch of air. As you know, high altitude = low barometric pressure.
When you run on a dyno in less than favorable conditions as I have just described, the SAE & the STD version of the graph will add power by a factoring the actual times 1.xx (maybe 1.05 for example). The xx being a result of the computer program sensing the run/weather conditions at that moment and adding x% due to the lousy (for power) air (weather) in the dyno room. Don't want to penalize the rating of the engine just because we are giving it bad air.
When you do a dyno run in extra good conditions, cool,dry,high pressure the SAE computer program will have a correction factor of o.xx (maybe 0.95 for example) Taking away x% because the air in there is better than the agreed upon standard. In other words that air has way more oxygen molecules than the hot/humid/ low pressure air and the engine will make a lot more power but we don't want to give credit (HP) to the engine for that. The extra power was due only to the better air so the correction will be to remove some from the actual to get the SAE rating.
SEA and STD both take weather conditions into consideration while "Actual" or "Uncorrected"(same thing) do not.
Last thing is to know that the SAE #s are roughly 4% smaller than STD #s are.
Now what puzzles me is the handwritten #s. SAE and STD are both designed to be pretty close to an average day at near sea level. You can look up the exact conditions anywhere. The puzzle is the printout clearly shows SAE, which means that is what you should see if you were running in that theoretical average weather day. That's the whole idea of having a standard, so we can test at altitude or at sea level, hot or cold day, wet or dry, and get a usable number.
Alls I can say is
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