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

Andyme2

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Yes, i think so too. The problem is: people are reporting that they are getting all kinds of error messages,ABS not working etc. But I don't know what values they have tried to enter...values other than 3.73 or 4.11 seem not to be accepted.
I would be interested in knowing what happens if they change the gear but do not change the value in the tazer...
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MMalone

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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 the code, so a waiting game at this point, possibly two weeks. Keep in mind the recient 4xe's are different than the earlier, different parts, various changes and suspect the ECM as well, been almost 2 weeks.

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With the 37"s, did you have to modify your spare tire holder?
 

Almondfarmer

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Must lift at least 2”. Rear backup sensors occasionally detect tire. Can be disabled on dash. A 4” relocation bracket will significantly reduce rear view mirror visibility.
Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122
 

Tr4ckD4ys

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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 the code, so a waiting game at this point, possibly two weeks. Keep in mind the recient 4xe's are different than the earlier, different parts, various changes and suspect the ECM as well, been almost 2 weeks.

Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122
Aren’t you asking for trouble with your axles considering how much torque you put on those Dana 44s? Or is this a street queen? I see 392 wranglers snap and wear out a lot because of the torque of the engine. The 4xe is right up there with the instant torque.
 

GATORB8

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Aren’t you asking for trouble with your axles considering how much torque you put on those Dana 44s? Or is this a street queen? I see 392 wranglers snap and wear out a lot because of the torque of the engine. The 4xe is right up there with the instant torque.
I guess you can ask for it with the skinny pedal, but the new 44s are pretty strong. We’ve wheeled pretty hard for 15k without issue.
 

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XX4XEXX

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Man what a bummer. I did an evo 2.5 full Synergy 37s no gears Reid Racing and ECRI and its been flawless!


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 the code, so a waiting game at this point, possibly two weeks. Keep in mind the recient 4xe's are different than the earlier, different parts, various changes and suspect the ECM as well, been almost 2 weeks.

Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122


Jeep Wrangler JL 2021 4xe, lift, 37's, gears, flash A9997AAD-ACD8-471F-9176-0BC14B7FF122
 

BigMaCro

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You've resurrected a dead thread.

There is now a TSB to update the software on the ABS module to allow re-gearing the 4xE. The only challenge is to get the service department to apply the software flash before you put in the gears. It is assumed that newer 4xe already have the updated software.
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