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APR is one of the most established names in Volkswagen, Audi, and Porsche performance, built on precision ECU and TCU software tuning and backed by a full range of supporting hardware. Since 1997, APR has engineered its upgrades platform by platform, calibrating each tune to a specific engine and transmission rather than relying on generic maps. That software-first approach is what earned the brand its reputation across the VAG family, and it is the foundation every other APR product is designed around.
Beyond software, APR develops the hardware that helps a tuned car deliver. The catalog spans intake systems, intercoolers, and turbocharger components on the engine side, catback exhaust systems, and a suspension and brake lineup that includes coilovers, springs, sway bars, and big brake kits. Because these parts are engineered alongside APR's calibrations, they are built to work as a system — an intake or intercooler chosen to match the airflow and cooling demands of the tune it runs with.
This collection brings APR's tuning and hardware together in one place for VW, Audi, and Porsche owners building a coordinated setup. Whether you are starting with an ECU upgrade or adding hardware to support one, each product page lists exact fitment and specifications so you can confirm compatibility with your vehicle before you buy. Note that certain emissions-related software is subject to US market restrictions, which is reflected at the product level.