Lasted edited by Andrew Munsey, updated on June 15, 2016 at 1:59 am.
Discussion page for Directory:Gadgetman GrooveLatest: Directory:Fuel Efficiency / Directory:Viktor Schauberger > Directory:Gadgetman Groove - Ron Hatton's "gadgetmen" use a Dremel tool to cut a groove in the throttle body. The modification takes about an hour and is reversible through epoxy. Somehow, the air turbulence that is set up by that groove has the effect of increasing horsepower, torque, and mileage, while decreasing emissions. (PESWiki Dec. 7, 2009) (Comment)
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On December 07, 2009, David Richardson wrote:
I had a thought on the mileage aspect. During the summer, it wasn't
uncommon for my truck to achieve 23 to 27 mpg @65 mph without the a/c.
Now that temperatures are getting colder in our part of the world,
my mileage has dropped to 20 -21 mpg due to the colder and more dense
air. The 10% improvement you achieved with your van (this time of
year) should be more significant when the temperatures warm up in the
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