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Need to calibrate speedometer with 4xe and new 3.5 lift and 37's

2951 Views 5 Replies 3 Participants Last post by  combs1945
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.


LMK thanks
alan
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BTW, here's my rig (before-red and after-green)
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I have heard that the Z Automotive Tazer works, but I have not tried it myself.
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.

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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.

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