Quote:
Originally Posted by ChipsWithDips
Correction factor is calculated based on atmospheric conditions... that's the whole point. The before/after dyno were done on different days, hence different temps/humidity/pressure.
I have the run files, I can post up SAE corrected version if it makes you feel better. Probably will have to wait till monday though.
Not sure why everyone is acting like it's impossible to make good gains on this car and that this is all somehow some big conspiracy, but whatever.
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It is less because people think it is impossible, and more because the two runs don't really share much correlation. Run time on different days means a huge potential variability that isn't accounted for.
As it sits, you picked up ~10PP with a tune and headers, on a pair of runs with vastly different weather conditions. Certainly not an unbelievable gain, but one that really doesn't mean much unless the runs are done back-to-back. Correction variance due to weather could easily account for +/- 8-15PP