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You said:......"all in all its not that bad driving around town but on the highways it runs into an issue. I have no problem doing 70 ir 80+ but. after 60mph the aero kills mpg. cruising @ 55mph @1850 rpm the scan gauge would net between 24 and 26mpg. @70mph @2500 rpm it would be getting 12-14mpg :/ and by 80 its down past 9mpg."
you 'claim to have done research'........
not here!
or you would have NEVER made the comment in red!
So here we go.......
It's the gearing, not the aero that kills the mpg after 60mph.
And reading ANY of the 70 posts on the topic would help you understand that.
Engines have a sweet spot.
Hell, my car is very aerodynamic and I've done all the right mods. But if I go above 70 the mpgs go down!!!!
It's because the engine is turning too many rpms and is past the sweet spot.
search ABA testing.
go find a stretch of freeway and run at 50, 60, 70 & 80. establish a base line for your stock vehicle. run a/c on and a/c off.
log it by resetting the sg each time.
If you run tires that are 6-7% taller (read my posts) then you can see that your speed will increase for the same rpm.
And again, IF YOU WOULD READ, you'd see that we arent talking about .
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