I agree Mus. I've dynoed my cobra MANY times getting many different results (anywhere from 440rwhp to 460rwhp with the exact same tune and setup). They are a very in-exact science, even under the best of conditions.
The track is the real "baramoter" for me. If the car is trapping what I think it should, then that's good enough for me.
I had a friend just dyno a Cobra, and he was really dissappointed, being about 10hp lower than he expected. But he talked to another friend who had had his car dyno'ed at that place AND another place on the same day, and the first place was about 17hp low! so. . .
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