skewing the dyno??

NC Engine Builder said

People dont listen. Engine builders with dynos tend to exaggerate numbers, just like head porters with flow benches do. Yall remember MRL? that was the biggest lier I ever saw post on the internet.

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That is for sure. There is 4 dynos in the Bay Area that we have ran motors on. 2 of them we ran the same motor on the same day and had the same numbers within 1 HP. We ran it on ours first and thought we were having problems with the brake. Turns out we were have cavitation issues at 6000 RPM which is barely on the cams when it spins to 10,5. We still got in a solid power pull on ours, before taking to the other shop. There is one more shop with a dyno that built a motor, and then we got the motor. Their dyno lies by about 50 HP, as we ran the motor at “end of life” on the known good dyno and the motor was way down from their dyno sheet. We ran a leak down a motor was all above 90% and look fine on tear down…