If you've ever been Waterfest or H20 — the big VAG-togethers for VW/Audi fans — you know how rabid tuning shop APR's fanbase is. The Alabama-based outfit has been responsible for some major-league hardware and software upgrades.

This week on Tuned, Matt Farah visits the company's 'Bammy headquarters to drive a 560-horsepower (at the wheels) Audi TTRS, and helping out with some development testing on the company's new Stage 3 package.

That's pretty hot for a car based on the VW Golf.