Audi B9 A4/S4/A5/S5
Our OEM+ Performance Software is simply the most effective modification you can make to a modern turbocharged engine.
Depedant on which engine type, RacingLine offers separate stages of performance from Stage 1 to Stage 3 - plus Stage 1+ for the later GPF-equipped cars.
And remember, it's only with OEM+ that you get FREE upgrades up to the next stage whenever you're ready to continue on your tuning journey.
Click on your model below to see the OEM+ Software upgrades we have for your car:
Some people ask why we only supply OEM+ through dealers, rather than choosing a 'flash at home' option. It's because to properly access a car's ECU programming is a complex and technical task.
We believe in doing the job correctly, especially for such a technical upgrade. We've chosen our global network of OEM+ Technical Centres to verify the health of your car prior to flashing, to ensure that the programming has been correctly installed and finally to verify the successful performance after install. And, to be there for you should you have any concerns post-purchase.
After all, aren't some jobs are best left to the experts?
Every one of our calibrations has been developed right alongside our world-renowned range of Performance Parts hardware.
Reassuring to know that you can select a full suite of hardware and software, with both aspects developed in tandem with the other, to be sure that you're getting the most out of your car's capabilities.