Quote:
Originally Posted by SGOS252382
Looks good.
How long was it between dyno runs? The reason I ask is the humidity changed drastically from 67% to 25 %. A long cool down (while they worked on your car) between runs could account for some the HP gain.
By looking at the angle of the sun in each dyno run, it seem like there was a lot of time between the two runs?
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Best thing to do would be is to have the shop use the SAE numbers... that will take things like temp., barometric press. and humidity into consideration and apply the proper correction factor so you can better compare numbers...
One interesting thing I recently learned was that for some reason GM car dyno a bit better when the car is warmed up... I was skeptical when my dyno guy told me that... but sure enough, my first pull after a LONG cool down was the WORST! Best one pull was about the 3rd one with only a short cool down between pulls...