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Old 06-10-2008, 01:44 PM   #3
jfiscus
Terrain Stomper
 
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Join Date: Feb 2007
Location: Crittenden, KY
Posts: 633
It changes the shift points slightly (for power or comfort). Drive it in whichever you like the feel of better, Had a few XJs and each one varied. After 19 they just hard wired it in :power" mode from the factory.
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