IE pulley, merc racing HX + APR or 034 tune (3.0, single pulley stage 2)Depends on the car and engine. Sometimes IE parts with an APR tune, sometimes Turner Motorsports. Should be mentioned that DO NOT tune and Audi or VW under warranty unless you want to buy a separate ECM for it; ODIS has gotten incredibly good at detecting tunes, even if using a piggyback.
I'm back and forth between APR and 034, I like being able to do it myself with 034, but I trust APR more