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Hi all,
I am new to the X1 forums. Just bought X1 x20d x-drive 2014. Previously coming from N54 335i. Has anyone here used or is using a flash only tune on the N47T ? If so any information would be appreciated. Looking at engine information, it looks like the x18d, x20d and x23d all use the same engine. Does that mean one can upgrade each to the power of the highest ? Or are there other engine type differences between them ?
Thanks for the help.
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