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Mike_L Mike_L is offline
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Posts: 1,874
Join Date: Jun 2014
Car: 2021 M550i xDrive
Default 11-18-2019, 08:48 PM

Who told you that the M50i is just a tuned version of the 50i? Thats not even close to true. They have 2 different versions of the N63, the N63B44D and the N63B44C (aka N63R). Go through the ETK, there are tons of part differences, from the short block, to the turbos themselves.
I'm fully expecting to see 600hp+ out of the N63B with a tune and perhaps a bit of ethanol.


Mike Levy
2021 Tanzanite Blue II M550i xDrive
2018 Silver Equinox LT 2.0T

Last edited by Mike_L; 11-18-2019 at 08:53 PM..
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