Reviews: Pro Comp Accu Pro Speedometer and Odometer Calibrator

Plug and play. Worked exactly like I needed it to for recalibrating for larger tires.

I'm running 35x12.5x18 Goodyear Duratracs on my 2013 Wrangler. Before getting this calibrator my speedo was reading about 4-5 mph higher than actual. I set it to 34.5" which is what Goodyear says is the tire diameter. The speedo was still off by 3-4 mph. I just kept reducing the tire diameter by .25 - .50" and would do a test run comparing my speedo to two different smart phone GPS apps. I finally settled on a tire size of 33.0" which yielded a spot on speedometer reading. The added benefit is that my Jeep now drives and shifts much better than it was. It had previously been bogging down at low speeds and would sometimes not want to shift up to next gear when running around 50 mph. This speedo calibrator fixed both problems and it drives like a dream. Probably the best hundred bucks I've spent on the Jeep! Thank you.

Plug in and play. Easy to set up and instructions worked perfectly. The trucks speedometer is now exact with no issues. Great product.

After installing over sized tires, the speedo was off by a bit. This was easy to use and fixed the issue by allowing me to enter the new tire height

This was$50 cheaper than the next device so I gave it a try. I took away a star because it doesn't even come with directions, however, it was very easy to use and reprogrammed my jeep in a couple minutes.

Calibrator was very simple to use and proved to be very accurate. Interfaced easily with 2009 Wrangler Unlimited. Good tool when recalibrating for 35" tires and 4.88 gears.

My truck is older had to go to HyperTech.com to download my program. take some time to navigate to download, but it worked well. Was getting a odd shift from first to secound every now and then. It took care of that.

When you first get it you have to download update from computer and it didn't work the first time. I had to have my 17 yr old son find the right update to make it work. After that it was easy to use. I wish the initial start up was a little easier.

instructions incomplete had to call service tech,after quick call all went smoothly,truly works well no wires to cut nothing to install just reflashes stock computer