Automatically corrects speedometer and odometer readings for non-stock tire sizes and/or non-stock rear-end gear ratios (accurate odometer readings are required by law).
Very simple to program and to put in F350 with 37” tires. Speedometers right back on the money now.
Calibrator was easy to use and corrected my speedometer as needed.
Talked with tech support as I couldn’t get power to programmer, they had no answer. Finally I tried a portable battery phone charger and had no further issues.
It works great. Only down side is, if you have multiple vehicles, you have to buy one for each. Great product.
Great product! I hade one issue. When trying to install the info on the computer the firewall was blocking it and not letting me go any farther. Made a few adjustments and it was very simple and easy to install. Definitely recommend.
It works but for some reason the tire size is not accurate. I put 285/70/17 Nitto Ridge Grapplers which measures 32.76”. In order for my speedometer to read accurately I had to set it too 31.5”. Accuracy was measured with GPS on cruise control at various speeds on the highway. Otherwise it works, btw the calibrator was updated before use.
Q: does this come complete with the wire and plug? Answer this question
A: Yes. Completely plug n play. All self explanatory. Very easy to use
Answered by Mike from Tucson on 01/25/2023
Q: Would this adjust my speedometer on my 1997 k1500 Z71 Chevy Silverado since mine is ahead by 20 miles Answer this question
A: Hey Cowboy! This will work for your 1997 K1500 should take care of the problem. Thanks for reaching out!
Answered by Erik from Compton on 01/17/2023
Q: Does this have to remain connected to the vehicle or does it just update the existing computer Answer this question
A: The Hypertech Speedometer Calibrator - 3350 will calibrate and update the vehicle’s computer. If you’ve installed tires that are larger or smaller than original equipment tires, or if you have installed a ring and pinion gear set with a different rear gear ratio, Hypertech Speedometer Calibrator allows you to re-program for correct speedometer readings, as well as correct part-throttle shifting. The vehicle’s computer calculates your vehicle’s speed based on the diameter of the stock tires. If you’ve installed taller or shorter tires, or changed the rear gear ratio, the vehicle’s computer doesn’t know how fast your vehicle is going. As a result, the automatic transmission may not shift correctly and the speedometer readings will not be accurate (as required by law).
Answered by Dave from 4WP HQ on 10/05/2021
Q: CAN THIS REMOVE THE TOP SPEED LIMITER? Answer this question
A: Wouldn't on my 2020 GMC 3500
Answered by Brian from Kennesaw, GA on 06/07/2021
Q: My 2003 sierra 2500 lb7 has slightly larger than stock size. 32.5". In addition to speedo correction, will it make any difference with shift points due to ratio changes? Answer this question
A: Hello Ostin77, For your 03 GMC Sierra 2500HD 6.6L, the design of this Speedometer Calibrator is to let your vehicle know Tire size and new gear ratio, no shift points info from device. You can update this speedometer calibrator HYP732500 to the Max Energy calibrator with Hypertech via website (I do not know how much they will charge to upgrade your calibrator). We do offer the Max Energy Power Programmer HYP32500 which will update shift points (does speedometer calibrator function plus more features). Thanks for checking us out.
Answered by Ralph from 4WP HQ on 02/15/2021
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