The Audi B5 was really the first Audi chassis that gained mass appeal for modifications. Sure, the Quattro, 5000, 200, S4 and S6 all had crowds that followed them and modified them, but it was really the B5 that took the Audi tuning theme to the masses. Most of those masses focused on two models; if you were new to the brand you bought and modified the plentiful and relatively cheap 1.8T, and if you could swing the hefty payments you bought the twin-turbocharged S4. Both accepted increased levels of boost easily, making them a no brainer for the tuning crowd. But quickly forgotten in the mix was the silky-smooth 2.8 V6. Initially available in 12 valve form, in 1998 Audi upgraded to the 30V heads. For the first time, the Audi V6 produced power levels near its competition, and the smooth and responsive V6 was a nice match for the slick look of the A4. But easy to tune it wasn’t; you weren’t left with many options outside of exhaust and intake if you wanted to turn the wick up on your 2.8. Unless, of course, you turned to unnatural forms of aspiration – happily supplied by PES in the form of a supercharger: