I installed the 5 Star tune yesterday. Did 300 miles today towing my toad. Shifting was 100% improved. Got 10.1 MPG, before the tune never got over 8.5. The unit came preloaded with the tune on it. When I tried to load it, I kept getting an error and it put it back to stock. I called Jacob at 5 Star, he took my info and said that they were having some problems with the preload. He emailed me a custom tune in 10 min. I uploaded it to the unit and then installed it. No problem.
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Tom
2016 Greyhawk 31DS
2016 Chevy Equinox LX
Blue Ox Baseplate w/Aventa LX Tow Bar & KarGard II Deflector
Blue Ox Patriot Brake
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