has anyone else dynoed their s2k at 4500 feet. I am trying to figure out if my numbers are normal for my altitude.

i have a stock ap1, and I put down 171 on a dyno dynamics dyno.

thanks for the help.

 

During the last meet one of the S2kers with Vortech SC puts down like 240 to 260hp MAX at his altitude and car feels allot slower. That's what he said, so that is very possible that you can dyno that low... well not like that's REALLY low or anything but questionable.

 

I am at a little more than half that height (2600) feet and put down 191 with Rick's header, TP, and RM Racing exhaust with an AP1 on a DynoJet..

 

i would assume he could dyno higher. boosted cars are not affect nearly as much as na cars at high altitudes

 

Good question.

If the dyno numbers are not corrected to standard sea level conditions (atmospheric pressure and temperature), the numbers are absolutely useless unless it is used to compare back to back pulls performed within short time of each other.

All hp numbers identified as SAE ratings (like the OEM published numbers) are corrected to seal level per the Society of Automotive Engineering methods. If you do not make the corrections to sea level, you cannot make performance evaluations relative to any other dyno run.

So many people just strap their cars onto these machines without understanding the technicals and make grand decisions on tuning or performance. It is amusing. Even more amusing are how many operators of these machines barely understand how they work and what the data actually means from an engineering/science standpoint. Anyone that leaves a dyno shop without SAE corrected numbers have been ripped off IMO.