Good points again.

That's why im sticking to the exact same dyno machine where I performed my stock baselines at. Each dyno machine usually has different calibrations and will yield different results from other dyno's, even if its the same type of dyno in similar conditions.

It still might not be accurate from day to day basis, but atleast I know it will be far more accurate than going from dyno to dyno all over the place.

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HEAT is def takes its toll on dyno results. about a year ago i dyno'd at performane factory (dynojet) a 246 with a 5/16, mrev2, and cai. When i was there a couple weeks ago to have a utec installed, it was hotter than last time and we did another baseline at 240....this is after i added the crawford plenum, pullies, and a couple other minor things. Another 20+ dyno pulls later we ended up with 250hp and 260 torque which was about exactly an extra 10hp/10tq! Not bad considering my car got hotter throughout the day....