Hypertech 3300 Speedometer Calibrator with Color Screen

I must say after all the modifications I did to my truck, this calibrator was very needed. I was very skeptical about the results I would have thought I am very proud and happy to report that everything turned out well. I bought a pedal commander to help give me more power to the gas panel to the throttle and that works well, after I lifted my truck 6" and added bigger tires and wheels my mileage was off as well as my shifting ratios were off with my transmission so I was not getting as much power or efficiency as I was needing. After calibrating I immediately saw or felt a difference in the gas pedal and the response from my truck and it was great. I've noticed my mileage has increased thus far a few miles per gallon but I'm not done fully testing how much better my mileage really will be in the future. Seeing how it's Winter time now and with a remote start it throws off my fuel consumption average. Even with that fact my mileage has increased by 2 miles per gallon. I would expect my mileage to be a bit better than that going into a Spring summertime.

This is an excellant product but do not buy used. These are locked to the first vehicle used on unless user removes calibration & returns vehicle to stock prior to returning product. People are buying these, programming their vehicle, and then returning for refund. These used units get resold and are unusable since they get locked to the VIN of the vehicle. Confirmed with manufacturer. Returns to retailers should be sent back to Hypertech for "clearing". I bought "USED Like New" but found it was locked. Also be aware that for 2013 Ram 2500 6.7 Diesel in California, Hypertech does not support a unit for sale in CA because of emissions standards. Returned for refund.

Worked great. I changed out the gears in my car and in a couple of minutes the speedometer was back on track. No issues whatsoever. Fast shipping. I received it a day early.

Hypertech 3300 Speedometer Calibrator with Color Screen: non-California.First, I was buying a new product that was not new when it arrived.The plastic inside of it was shredded, and it had obviously been opened and used before.I went to the website and connected it to the Internet and downloaded the new software.I connected it to my vehicle and it did let me adjust my tire size.This is the only item that could be selected or changed in the computer.I have not verified functionality or accuracy of the speedometer, but I assume I will be able to change it to make it more accurate if it is not perfect.

This did not work right away for me.. got an error pretty much as soon as I plugged it in on my 08 Ram 2500 6.7.. I called tech support with 15 minutes left in their day.. they knew the error and said they would stay late and get an update out within an hour.. They had it out in 30 minutes.. I updated the calibrator made it farther and got another error.. Took two more calls with Hypertech support and they were great.. fixed the errors in their software quickly, got the updates out and my speedometer is 100% accurate.. Hypertech goes the extra mile to make sure it works. I tried the competitors.. you might find my feedback on theirs, which they were happy with "pretty good" accuracy for their calibrator and having crappy support. You want great support and a product that will work for you.. get Hypertech.. BTW.. as a software application consultant, I was not bothered by them having to do software updates, its part of what I see daily but others might be. What I was rather impressed with, was the speed of the process they had to be able to roll production changes out that quickly.. pretty great work

Straight trash unit came assigned to another vehicle will not read my vehicle at all

Worked perfect to calibrate the tires size that I put on my 2016 ram rebel and very easy to change back to factory settings

i went from stock 18's to 20's about 3" taller .. now i will say this after reading the reviews when i got this thing i imediately went and ran an update on it before ever hooking it to my vehicle. update no problem. i first programed to what i thought the tires were but when i measured there was no weight on them so probable my bad. my speedometer went from 4 over to 2 under so i kinda calulated in my head its about 1mph per 1" so i went down an inch on tire size.. i was dead on it i was done with this in 45 min and my speedometer is correct.