Hypertech Speedometer Calibrator
#1
Junior Member
Thread Starter
Hypertech Speedometer Calibrator
Hey all,
just curious if anyone else has used the Hypertech Speedometer Calibrator. The place I had my lift put on originally set the tire size to 34.5".... The speedometer showed about 4-5 mph faster than I was actually going.
I recently have reprogrammed it 2-3 times adjusting the tires sizes a tad higher each attempt and have gone up to 36" tires, but my speedometer still shows about 4-5 mph faster.
Any help is appreciated.
just curious if anyone else has used the Hypertech Speedometer Calibrator. The place I had my lift put on originally set the tire size to 34.5".... The speedometer showed about 4-5 mph faster than I was actually going.
I recently have reprogrammed it 2-3 times adjusting the tires sizes a tad higher each attempt and have gone up to 36" tires, but my speedometer still shows about 4-5 mph faster.
Any help is appreciated.
#2
if your speedo is saying your going faster than you actually are than you went to far. with tire size.
i put 35s on without adjusting the speedo and mine tells me im going 5mph slower than im actually going
i put 35s on without adjusting the speedo and mine tells me im going 5mph slower than im actually going
#3
Junior Member
Thread Starter
Yes, so wouldn't making the tire size larger show me going slower?
Or do I need to decrease tire size to go slower?
#4
The larger tires you have over stock, the slower your speedometer will show you going compared to your actual speed - you're going further in the same amount of time.
So it seems like you're doing the right thing, if it's not changing your speedo reading regardless of the tire size, maybe the programmer isn't working right?
I'm sure you have the manual: http://www.hypertech-inc.com/Product...calibrator.pdf
How are you determining your actual speed?
So it seems like you're doing the right thing, if it's not changing your speedo reading regardless of the tire size, maybe the programmer isn't working right?
I'm sure you have the manual: http://www.hypertech-inc.com/Product...calibrator.pdf
How are you determining your actual speed?
Last edited by statikuz; 05-16-2015 at 03:34 PM.
#5
yes you need to decrease the tire size.
i went from the factory 275-65-18s
to 295-65-20s and im showing 55 on my speedo when im actually going 60.
so if yours is showing faster you need to decrease tire size in the computer
i went from the factory 275-65-18s
to 295-65-20s and im showing 55 on my speedo when im actually going 60.
so if yours is showing faster you need to decrease tire size in the computer
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