I beat the everloving fuck out of my hands today, wrenching on the Audi. Hyperextended a joint in my thumb, blood blister on one hand and cuticles cut up, but maybe it was worth it. The weather and open afternoon put me to task on direct-wiring a CANbus-based exhaust flap controller, which reads engine load, RPM or the "Drive Select" preset in my car to set the valves open on the Akrapovic exhaust. Had to re-pin a CANbus connector and run a harness below the floorpan to intercept the stock exhaust controller wiring.
Onto the engine bay, to resume the RS7 goods, this time with the OEM RS7 airbox and turbo inlets. With the cooler weather, that's enough headroom to flash to the Stage 2 file for a few more pounds of boost on 93 pump. Ethanol sensor and larger fuel lines to the high pressure pumps will follow, so I can give it all the ignition advance on E85 blends.
Got to the turbos, compressors are super clean and no shaft play. A friend who casually wrenches on trucks said my engine bay looks like 100 pounds of shit in a 1-pound box.