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Welcome Taylor, I think you are on the right track with your planned mods. I own both Scangauge II and Ultragauge. I prefer the Scangauge for ease of use and small size, easy mounting. It is worth the money in my opinion. I recalibrate it every fill up in just few seconds. FWIW I tuft tested the windshield and A pillar area on my car and was surprised to find the tufts at the base of the windshield flowing forward and into the fresh air intake even on "recirc". There may be little to no benefit from the wiper delete.
Sealing the grill opening to the radiator with some foam may help slightly too.
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60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun 
https://ecomodder.com/forum/showthre...tml#post621801
Quote:
Originally Posted by freebeard
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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