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Message: [QUOTE="bigrpowr, post: 388425, member: 806"] I'm sure the cf was high , ie 20% plus. Typically hallers reads a bit high corrected , but I don't believe the numbers are skewed a crazy amount as track times aren't very far off. I believe the peak number is a good bit high though. Perfect example , my truck dyno'd here on a dynojet at sea level uncorrected and did 589 with high powers , but ran 12.48 @ 107 at 8350. Trap speed said 675 which I believe to be somewhat correct. The truck dyno'd 723 on hallers, same setup only two weeks later. I think JD's increases speak for themselves. Improvement is huge for cost and labor. Great fricken mod no doubt about it. [/QUOTE]

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