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Old Jun 13, 2007 | 06:32 AM
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JF-WS6's Avatar
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Default lost hp, Any thoughts?

Last year I dynoed 439rwhp and 388rwtq with all of the mods in my sig. I added a FAST 90/90 setup (not ported) and 42lb injectors, went and got my dynotune and the best I could get is 425rwhp and 377rwtq. WTF. It was a different dyno but they were both dynojets. The only thing that would really affect the #s was the outside temp and humidity. When I dynoed last year it was about 35 degrees out, this year it was 90 degrees out, but I wouldn't think the temp would affect it that much. Will different dynos read that different from each other? Or can the temp affect it that much? Any thoughts?

Last edited by JF-WS6; Jun 13, 2007 at 11:51 AM.
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Old Jun 13, 2007 | 07:03 AM
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sometimes when its that cold out a dynojet can over correct assuming your going by SAE #'s
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Old Jun 13, 2007 | 10:20 PM
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Temp will make a healthy difference.
Best way to tell is take it to the track and compare trap speeds to previous runs under similar conditions.
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Old Jun 14, 2007 | 11:58 PM
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take it to the track and see if you trap higher
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Old Jun 15, 2007 | 02:02 AM
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If you got tuned in 35 degree weather the tuner probably added alot more timing than in the recent tune. Also dyno's do vary alot, I've never dyno'd the same from dyno to dyno.
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