Audi A3/S3/RS3 Engine Hardware
APR's Performance Lineup for Audi A3, S3, and RS3 vehicles.
From intakes to exhausts, and everything in between, our hard parts are the perfect complement to our ECU and TCU software upgrades.
From intakes to exhausts, and everything in between, our hard parts are the perfect complement to our ECU and TCU software upgrades.