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Discussion Starter #1
HELP, I have a 2011 550i Sport that got flooded out and the engine needed to be replaced. So the engine was replaced with a 4.4L Twin Turbo engine off a 2010 750i. The problem now is that engine wire harness transmission connector that came with that engine does not fit into my existing transmission. So I got a complete engine wire harness for a 2011 550i that fits the transmission, but it does not fit the engine (there are several loose/missing connectors). My car has an 8 speed tranny while the 750i has a 6 speed tranny I believe. What am I missing? Or will that engine not work for me? Please any help/suggestions will be appreciated. Thank you
 

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Did you try debadging it?

Sorry, this is way over my pay grade and Im sure your frustrated! Wish I could help!
 

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Why dont you try realoem
go there and cross check the parts you have at hand with the original ones
 

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Discussion Starter #5
Why dont you try realoem
go there and cross check the parts you have at hand with the original ones
Thanks, good advice. Most of the engine parts are actually the same between the 2 cars. The only exceptions I see are related to fact that the 550i uses Electric Power Steering vs the Hydraulic Power Steering of the 750i. So i'm sure the plugs might be different.
 

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Thanks, good advice. Most of the engine parts are actually the same between the 2 cars. The only exceptions I see are related to fact that the 550i uses Electric Power Steering vs the Hydraulic Power Steering of the 750i. So i'm sure the plugs might be different.
You need to cross check every part by number; some parts may seem the same but could be different
good luck
 

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Discussion Starter #7
UPDATE: OK, so i have the right harness all connected up now, but the transmission is stuck in Neutral and it is just flashing "N". It is not moving into park "P". What could be wrong?
 

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UPDATE: OK, so i have the right harness all connected up now, but the transmission is stuck in Neutral and it is just flashing "N". It is not moving into park "P". What could be wrong?
You need ISTA/D in order to introduce new parts to each other
 

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Discussion Starter #9
Finally got the car to start and drive, but I have a couple of errors that remain. I am getting a Drivetrain Malfunction error and a DSC Malfunction. Does the engine computer need to be reprogrammed to recognize the new engine? Or what else needs to be done? Thank you.
 
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