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      10-24-2020, 01:55 PM   #18
mbanck
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Drives: BMW E46 320ci, BMW F34 330dx
Join Date: Sep 2018
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Quote:
Originally Posted by Jcali86 View Post
I didn't know that, thanks, are we sure it's the OPF and not a different tune to account for the OPF? Just curious as that's a large difference!
The 10 KW difference for the M340i is still present I believe.

I believe the rather large difference for the Z4 is/was due to packing issues for the OPF, i.e. BMW couldn't use the same exhaust treatment package as for the M340i (but a smaller one I guess) so they had to massively detune the engine in order to follow regulations.
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