RacingLine Audi S1 Cold Air Intake 2.0 TSI- FoamSIMPLY THE BEST. LET YOUR ENGINE BREATHE. The highest performing, race bred cold air intake for the Audi S1. WHATS SO SPECIAL? One of our most popular products is our Cold Air Intake System kit, enabling cold, dense air from outside the engine bay to reach the fuel metering unit more efficiently for the Audi S1. Our giant high flow filter construction is simply the best filtration material on the market, and is the key to the power gains achieved.
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