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      10-09-2019, 06:37 PM   #33
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Drives: 2015 435i
Join Date: May 2005
Location: Southeastern US

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Originally Posted by upsidedownfunnel View Post
Originally Posted by F32Fleet View Post
GPF(Gas Particulate Filter) to blame?

Kinda ironic if so.
No, they're just different versions of the B58. The Euro M340i uses a version of the engine that is almost the same as the American M340i and American Z4 M40i. The Euro M340i makes about 375hp which is a direct result of the GPF required for European cars.

The B58 version in the Euro Z4 M40i and Supra are just different. I think it's mostly due to tuning, but there are some B58 versions with different parts. For instance, the earlier 320hp versions of the motor did not have the head-integrated exhaust manifold that more modern versions do.
I was thinking between Euro and US Z4..

IIRC the Supra B58 has mechanically restricted valve lift. I guess Euro z4 is same.
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435i, MPPK, MPE, M-Sport Line