Quote:
Originally Posted by Nine8Six
VJ should have included a before dyno run in the same environmental conditions as he tested the UDP afterward. I think you loose 10~15HP between seasonal air densities. It can be difficult to track small power gains sometimes.
My Boxster gains about this +10hp... when the wind blows from behind loll
Perhaps he forgot to install the shorter serpentine belt required to make the kit working?
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+1 ^^^^
The dyno baseline test was on 10/22/16 whereas the UDP test was on 11/26/16. The temp and humidity correction (or poor correction) could easily result in a margin of error equal to the magnitude of the difference under test (3-5hp).
He needed to do a baseline and the UDP test on two consecutive days at the same time of day when the weather was generally constant to be able to accurately measure the difference.
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