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      11-01-2012, 07:46 AM   #1282
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, MMP Stage 3 turbos, MMP outlets, custom inltets, VRSF 7.5 race IC, ER charge pipe, Tial BOV, Fuel cell w/ Fuelab pump, filters & FPR, MMP PI, Return line, Bluetooth ethanol sensor, MHD 100% E85 tune, PR coil packs, Spec 3+clutch, Mfactory SMFW, AR downpipes, single 3.5" into duel 3" exhaust, H&R coils, 19" 2-piece wheels, RE-11 tires 235 & 275/19's