So where did you have it "remapped"? Because the OEM software is highly integrated and the DME and EGS communicate through can bus... if it isn't BMW software, it could have affected the communication between the modules. The EGS uses ALOT of imputs and signals from the DME to lay out its shifting characteristics, such as throttle percentage, % of load, RPM, etc. And the DME uses signals from the EGS as well.

So if it is NOT BMW approved software such as DINAN (who really is the only way to go for performance programming) then chances are thats your problem. It might be worth getting the dealer to reprogram the DME with OEM software and possibly perform EGS encoding as well. Should only be a couple hours labor charge...

While it isn't uncommon for higher mileage X5 transmissions to have problems, it sure would be one hell of a coincidence!

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X5 pics

RIP 4.6is.....

2003 4.6is