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Message: <blockquote data-quote="Hellion94" data-source="post: 434450" data-attributes="member: 8471">Re: Current Winter Projects... couple changes in store for the GTS - dyno resultI was just asking about the altitude correction factor. I doubt that you are very high above sea level, so it probably wouldn't make a huge difference, but the "actual" number is the number that the dyno showed that you made without factoring a correction formula. "Corrected" would then be the number that was displayed after the correction formula for altitude was calculated. It's pretty standard for people to only tell their corrected numbers, because those numbers are usually much higher. For instance, my '89 LX, when it had a stock longblock and the ProCharger on it, made 385 to the wheels here uncorrected, but 450 to the tires with the correction factor in place. Now, that's a pretty big gap because we are over a mile high here in Albuquerque, but with a supercharger, the correction factor is usually pretty close. It's just designed to try and calculate what the power would be at sea level air conditions, and it was created for N/A engines. just fyi, at a DA of about 6000ft. the car ran 10.97, but at a DA of about 1800-2000 ft, the car ran 10.47 with no changes. Every 10hp or so is supposed to be worth about a tenth, so that means that just moving down 4000-4200ft. garnered us about 50 hp (which would make the RWHP number about 435), so assuming that same amount increase would continue on until we got to sea level, the correction factor is pretty spot-on.</blockquote>