Tech Articles and Product Write Ups: Tracking/Racing the Audi A4/S4 Heel-and-Toe Solution Auto Speed Performance Tru-Dual Exhaust Write Up AutoSpeed Performance 3" Down-pipe Installation Instructions by Mark @ AutoSpeed Performance Even though this is written by BMW, still very good. How to drive the Ring Audi S4 Engine Power Bleeder European Car Review Brembo GT Kit Comparison Bilstein PSS9 Dyno Test Results - must read if considering PSS9s Dyno Test of StartupRacing GT B6/B7 A4 Exhaust Dyno Test of Euro Code B7 A4 Test Pipe StartupRacing GT Coilover Kit for B6 and B7 A4/S4 Brembos for a B6/B7 A4/S4 |