September 7, 20232 yr Morning Paul Welcome to the Forum Never seen or heard of anyone using the App but from what I read all the App does is set the clutch in the transfer box to 0 torque. You still have all the components, Transfer case, Front Diff, Front Driveshaft all turning plus the weight. If you have a transfer case problem it will still be there. So this old bloke doesn't see the point if you want rear drive I would trade the car. Dave
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