I had a Nissan Titan that I had a bully dog power pup. Very similar to the gt tuner. It gave me a little power but not enough at all to justify $350. And no it will not give you better fuel economy while towing or not towing. They will say they will give you better fuel economy but that's only because they give you the ability to lower the rpm red line and to lower how fast you can go. And who is gonna do that. Save your money.
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2012 Sandstorm 203slc
2013 Toyota Tundra
Eqil-l-izer hitch,Prodigy P3
2014 Honda Pioneer 700-4
2004 Yamaha Grizzly 660
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