Quote:
Originally Posted by pruettfan
For those wondering why BMW is replacing the S55, it's simple. European regulators have increased emission requirements which is why the M2 lost its N55. They have to continue to evolve their engines to meet these requirements. Also the HP wars are on and it makes more sense to build the S58 then tune the S55.
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Inb4 all the cat deletes nullify the better emissions