Quote:
Originally Posted by heavyD^2
In regards to the high output B58 what are the documented changes? Are the internals different?
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its the B58B30O1.
if you read the 2019 z4 m40i highlights BMW briefly talks about it. There are no engineer docs out yet. For now basically upgraded fuel system and water cooled exhaust manifold.
rumor is slightly bigger turbo compared to the first variant of the b58. could also explain the higher wtq numbers but not confirmed.