🚀 Hypertech Speedometer Calibrator for 2007-2019 GM Trucks & SUVs; 2006-2016 GM Diesel & 2006-2015 GM Passenger Cars Review

The product itself does what it is supposed to do. It's not as accurate as it should be. My tires are size 33, but I had to enter size 38 for the speedometer to calibrate to the speed limit. Support takes a long time to reply. Except this good buy.

In all my years of shopping at Revain I have never left a review. It doesn't matter how great or terrible the item was. This thing and hypertech in general are going to give me a brain aneurysm! Without an update it doesn't work right away, the website says the update is no longer available and the support team can't take calls. DON'T WASTE TIME!

Before you do anything. You have to connect it to your computer and select your car. Then update the driver and install the software. I thought it was plug and play, it isn't. It's easy to use. You will need a tape measure, measure the tire from the bottom to the top. I had a little over 31.25, I chose 31.25 not knowing that the tread depth would only decrease. My speed is correct according to my GPS.

Don't listen to negative reviews, they have no idea what they are talking about. A few years ago I dropped the stock tire size to 33 which didn't make much of a difference and I haven't noticed much of a change. About a week ago I said why not and bought 35 inch tires. I started driving around. I suddenly noticed that in order to maintain speed on the freeway, my engine had to work harder (higher revs), the shifting wasn't smooth, and something suddenly or suddenly was wrong with the car. I did