“Self adjusting speedometer” ??

Dave91gt

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2018 JLU Sahara, 1998 TJ Sahara 4” Zone lift
I installed the Tazer mini on the wife's JLU the day the dealer installed the Mopar lift and I added 315's. That was about a month ago. Verified speedo with an IPhone app.
Had to take it back to dealer yesterday and unmarried it. Speedo read 67 when app showed 71.
They changed the trackbar, flashed the steering calibration to the updated version, and set the alignment. Drove it home and reinstalled the Tazer in about 5 minutes.
My dealer tech recommended I buy aftermarket to adjust it. Said FCA charges too much and its a onetime adjustment.
 

HealthRebel

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He said they will fill your tires with nitrogen and it will give you 2" lift. You can also pay $200 more for helium to boost it.
Helium boost in your tires can double or even "triple" your gas mileage! Lol!
 

Packnbeer

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I would be very concerned to ever take my baby back there again. Run, don't walk, to your phone or computer and buy a Tazer Mini and set it yourself. Only then will you know its correct and the Tazer mini will be one of the best things you do for your JLUR. Flashing 3rd brake, keeps start/stop turned off if you want, disable TPMS or change pressure settings, light shows... and on and on and on. Worth every penny. You will spend $150 to $175 having the dealer change the speedometer. Spend a few more dollars and never have to have them do it again plus you now have all of the other functions.
 

W5MQS

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Agreed... you need to recal the speedo. Otherwise, your shift points will be off. Mine was until I did the recal.
 
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