[alanr]

Hi all, does the Speedchip Flashcal for JL's work for a 4xe with 3.5" lift and 37's? My speedo is off by ~9mph at higher speeds.

Jeep Flashcal for JL WranglerÃÃÃÃî | Superchips

Introducing the Superchips Flashcal F5 for 2018-2021 JL WranglerÃÃÃÃî Shop Now.

superchips.com

LMK thanks
alan

 

[alanr]

BTW, here's my rig (before-red and after-green)

 

[hairamess]

I have heard that the Z Automotive Tazer works, but I have not tried it myself.

 

[hairamess]

Here is some more info, the Tazer works for the tire size changes you made, but if you re-geared it will not work for that yet.

2021 4xe, lift, 37's, gears, flash

All the goodies, 2.5" lift (matched EPIC to the "T"), 37's, bumpers, winch, dealer flash then to the gears..... Z automotive said it worked, so she went in for 4.56's, then two days of trying to flash went south back and forth texting, doesn't work on the latest model. Z is working on cracking...

www.jlwranglerforums.com

 

[alanr]

Here is some more info, the Tazer works for the tire size changes you made, but if you re-geared it will not work for that yet.

2021 4xe, lift, 37's, gears, flash

All the goodies, 2.5" lift (matched EPIC to the "T"), 37's, bumpers, winch, dealer flash then to the gears..... Z automotive said it worked, so she went in for 4.56's, then two days of trying to flash went south back and forth texting, doesn't work on the latest model. Z is working on cracking...

www.jlwranglerforums.com

Great thanks! Much appreciated. I'll try it out, and comment if it works (or not). Enjoy!

 

[combs1945]

I bought a zAutomotive tazer. Make sure you do the update for the 4xe.
I then got an speedometer and picked then one right below 35 inch tires. Worked like a charm.