I know that K&N have a intake kit for the A4 1.8 which is pretty cheap and some more expensive intakes is the Carbonio and EVO intake. A suggestion for you on the intakes is since alot of people make their own you should get the adapters for the MAF sensor on the intake, I think that would help alot of people so that they wouldn't have to make their own for the MAF.
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High performance ECU chip,K & N air filter,After market clear headlights and turn signals, Dual chrome exhaust tips, S4 steering wheel, Boost gauge, Debadged grill
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