APR is pleased to present the ultimate ECU Upgrade for the Audi B7 RS4 4.2L FSI V8 engine. After months of long nights and many hours of testing, development and more testing, we are pleased to offer you an ECU recalibration that is second to none....

APR is pleased to present the ultimate ECU Upgrade for the Audi TT RS and RS3 2.5 TFSI. After months of long nights and many hours of testing, development and more testing, we are pleased to offer you an ECU recalibration that is second to none....

Longitudinal Motor

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Modification of the 2.0T FSI engine far beyond OEM power levels requires an additional volume of high-pressure fuel especially in the midrange (3000-5000rpm) of the powerband. To understand why this fuel is needed for the mid range, one must first...

Modification of the 2.0T FSI engine far beyond OEM power levels requires an additional volume of high-pressure fuel especially in the midrange(3000-5000rpm) of the powerband. To understand why this fuel is neededfor the midrange, one must first...

APR Presents our 2.0T Tuning Package for the Volkswagen Golf R! Volkswagen Automotive Group's 2.0T found in the Golf R is the world's premiere 4 cylinder turbocharged engine and APR has developed a line of premiere performance enhancements to...

No dates were ever given and many said it would never happen, but APR is proud to release our K04 upgrade kit for the transversely mounted VW's. Our kit includes the K04 turbo, the compressor inlet O-ring, four turbo to downpipe studs, one manifold to...

The APR Intercooler System is a massive front mounted upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! The system is an easy to install, direct bolt-on design, that is recommended at...