Tuners

LJ G

LJ G

Member
Joined
Aug 28, 2021
Messages
27
Location
Georgia
What’s everyone using for Tuners? Just regeared and locked out 04 LJ and need to update Speedo and a few things.
I know there’s not much adjustment for 4.0 but would like to know before I drop 400+?
 
LJ G said:
What’s everyone using for Tuners? Just regeared and locked out 04 LJ and need to update Speedo and a few things.
I know there’s not much adjustment for 4.0 but would like to know before I drop 400+?
Click to expand...

You don't need a tuner for adjusting the speedometer. Look up jet accu-speed (speedometer correction device).
 
LJ G said:
What’s everyone using for Tuners? Just regeared and locked out 04 LJ and need to update Speedo and a few things.
I know there’s not much adjustment for 4.0 but would like to know before I drop 400+?
Click to expand...
Don't waste your $$$ on them, they don't do anything for a TJ. And it won't correct your speedometer either, that requires nothing more than a new snap-in speedometer gear which takes 5 minutes to swap with nothing more than a 1/2" wrench.

http://www.4x4xplor.com/speedo.html
 
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To correct your speedometer all you need is the correct speedometer drive gear depending on your differential gear ratio & tire diameter. MyTJ with 33”/12.50R15 tires & 4.56 gears used the 39 tooth drive gear & the speedo is dead on according to my old Garmon GPS.

53280E3A-012F-4C30-AAC3-A477E946F516.png
 
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