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TestimonialsWhen I tow my 17 foot travel trailer with my 2017 Colorado with a 2.5 liter and a 6 speed manual transmission it just needed a little more power to get up hills. I spent a lot of t…I added my Trifecta to the Sky RedLine and programmed it to use the traction button. I call it my "Jesus Button"VERY happy with the product and timely customer service. Put a 6" lift and 33's on my 2016 Colorado and this tune not only took care of my speedometer calibration, but the tune…My Sky Redline was quick but now, it's scary quick. Easy installation, too. Amazing how these microprocessors on wheels can be tuned by zeros and ones.