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      11-01-2012, 07:46 AM   #1280
Eracer76
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Drives: 2009 E89 Z4 35i
Join Date: Nov 2011
Location: IL

iTrader: (5)

I believe they are using two wastegates because the manifold is for a twin scroll turbo, that way the two banks stay separate until they hit the turbo.
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2009 Z4 35i 6mt, Spec 3+ clutch, Mfactory SMFW, MHD E40 tune, AR downpipes, Custom turbo Inlets, BG intercooler, Stett Chargepipe, Tial BOV, H&R coils, 19" 2-piece wheels, Potenza RE-11 tires

Sold > 2008 E92 335xi FBO and more, ran 11.988 @ 114.080 MPH on all season tires...