
Originally Posted by
generationjdm
Just run the car at the track, who cares about fat times and if the dyno reading is roughly 12-15% higher then it should be.
If the car doesn't hit low to mid 120ss for mph then you know how happy the dyno is...
Your average k04 car will never crack 400whp on a dyno thats reading perfect, your fueling can tell you exactly what the cars making you don't need a dyno to tell you that...
So where is this "accurate" dyno you are always referring to, located? What exactly is an accurate dyno? I know of 3 mustang 500 SE AWD dyno's, which were calibrated to Mustang's specs, that read a stock S4 at 201-202 whp. Does that mean all 3 are "inaccurate"? If his dyno is "inaccurate" why are his fats times on the dyno the same as the road fats times? Wouldn't that mean the loading is exactly the same?
Now I'm not trying to claim this dyno is a be all end all. Dyno results are all relative. Just as fats times and trap speeds are relative. Comparing them to different results from different users, dynos, tracks, roads etc. is futile. It will never truely be a 1 to 1 comparison, based on a number of factors. That said, you can get a rough estimate of a cars whp, by comparing dynos that read stock S4's the same. But again, it will never be truely a 1 to 1 comparison.
Trap times are not the be all end all either. Track conditions, drivers, timing devices, temp, altitude... etc. all pay a role in trap times as well.
My point is, your claiming of "inaccuracy" is just as bad as a tuner claiming "accuracy" of dyno results(not singling out AMD because they have not made that claim). And saying trap times are the most "accurate" is the same as someone saying Fats times are the most "accurate." Everything is relative. You can draw some rough comparisons and conclusions but they all have to be looked at in context.
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