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Old 01-13-2021, 06:20 PM   #19 (permalink)
JulianEdgar
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Quote:
Originally Posted by redpoint5 View Post
If one is certifying their vehicle for EPA fuel economy purposes, I doubt anyone would disagree that a more rigorous method should be utilized.

Since we're shade tree mechanics, the trend is more important than the precision. Having a ballpark estimate of what a modification does is tremendously helpful.
No apparently it's better to look at pictures and guess, rather than do on-road test and development - pressure measurement, throttle-stop testing... even lift/downforce testing.

I think a major underlying theme is that on-road testing soon shows that a significant number of ideas spread in this group are wrong - very embarrassing for some!
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