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i have VTT outlets installed on my car. My installer did replace the metal coupler that it comes with, he said the they came a little too close to the exhaust manifold, so he pushed it out a bit.
they seem to work great. throttle response is better, and on average i see 5% less WGDC in my logs.
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2011 BMW Z4 35i | FBO | VTT Stg 2+ (EK, 20T clipped)| Motiv PI| Motiv Tuned | Fuel-IT Stg 2 + inline fuel pump | Spec Stg 3+ clutch | MFactory flywheel | 606whp 575Lbs |
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