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      09-13-2012, 12:54 PM   #94
Diver's Avatar
Drives: Black '12 135i DCT PPK Msport
Join Date: Nov 2010
Location: Texas

Posts: 2,352
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1M has an N54, 135is has an N55 with PPK II.

The layout of the intake and the rear pipe into the intercooler continues to convince me there is a second blower and it is not an exhaust driven turbo, but rather an electric supercharger. It appears that the second unit is located too far down and back to be exhaust driven, given the layout of either the N54 or N55 exhaust driven turbochargers.
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