Quote:
Originally Posted by upsidedownfunnel
Quote:
Originally Posted by F32Fleet
GPF(Gas Particulate Filter) to blame?
Kinda ironic if so.
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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.
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I was thinking between Euro and US Z4..
IIRC the Supra B58 has mechanically restricted valve lift. I guess Euro z4 is same.