Calibration speedometer
- Thread starter Zinjasub
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ocwill1
Senior Member
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- 5.7 eTorque
gonna need a tuner or a speedo calibration unit, however you may want to check with waze or some other gps app. When I went with 35's, I did a test. set cruise at 70 using digital speedo. Waze was reporting bouncing between 70 and 71.. So apparently with the stock setup, I was off already... This is running 35x12.5x18 Toyo AT 2's. OEM was the 20x9 275x65 I believe (whatever comes on the 2500's)...
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- Hemi 5.7
Just buy the Hypertech speedo calibrator, got mine from vendor Nick@gotexhaust
https://www.summitracing.com/parts/hyp-752501
https://www.summitracing.com/parts/hyp-752501
6.7CumminsDrvr
The Dude abides………
You got a '14 so you can program the truck without having to get an unlocked PCM, I'd get myself a tuner......
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Agreed. I bought the Hypertech unit when I added 35's to my 2012. I just put them on my 2013 and I'm just going to deal with the difference until my warranty expires then buy a tuner. $200 is a bit rich to correct a speedometer discrepancy.
6.7CumminsDrvr
The Dude abides………
It is indeed!
Wandell
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Check out Superchips. They will sell you the recalibration device and if you want, you can upgrade it later to a tuner over the internet.
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