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Adding 151 HP to my Audi S4 w/ E85! Tuning, Fuel Pump Upgrade & Ethanol Sensor
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Quickest Audi S4 Street Car in the World?! | 10-Second Tears.
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Audi B9 S4 034Motorsport Carbon Fiber SüperDüper X34 Intake & Turbo Inlet Install
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GTI Intake, Air Duct & Turbo Inlet Install w/ Unitronic
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Dyno Testing Integrated Engineering's B9 S4 Air Intake & Turbo Inlet
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How Fast Is My Turbo V6 Accord?
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