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Test day #1: Vehicle is cold. Insert ECU. Run. Get numbers. Take temp readings, timing readings, all the other junk, they know what we want, I dont have to list it, and if I do, they shouldnt be selling ECU's. Step 2. Get vehicle to specific temperature (operating)Vehicle is now hot, redyno immediately. This is a heat soak run (lower numbers) versus the cold numbers that appeared earlier. Next day, same weather conditions. Insert ECU 2. Repeat the same process. One dyno cold, the other heat soaked. Next day, same time, hopefully same weather. Same thing, 3rd ECU. Also, the weather should be controllable. The dyno is indoors right? Close the shop door. Set the hetaer or A/C to 80-90 degrees and check humidity. Thats all we gotta do. Its not that hard people! That would give us a clear picture of who makes more power, and when. Its fine if JWT makes more power on a heat soaked engine, or Ash does, or George does, or maybe JWT makes NOTHING cold, but Ash is kicking ass cold, but heat soaked, everything changes. Without the info to disect, what can we learn? Most people who have done ECU comparisons have dynoed 3-5 times in a row, causing heat soak losses, and unfair comparisons. This is why we get into millions of arguments everyday about this. Eric L.
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