2013 Audi Allroad Apr Tune - 7T V6 Engine Tune for the Audi A6 Quattro 00-04, Allroad Quattro 01-05, S4 00-02 $549. Optional low torque I can tell you coming from previous tunes on various Audi's and VW's through the years, that the APR tune is unbelievable, and will absolutely change the driving characteristics of the car for the better. Thread: Audi A6/Allroad 2. UPDATE: Software is now much less then it used to be. 2021 Audi A6 Allroad Engine ECU Upgrade Transform your vehicle with our Engine Control Unit (ECU) Software Upgrades. My performance tune experience to this point has almost exclusively been via APR Bro only you can beat your car up,i have 90,000 miles and i get better mileage with the 2 tunes. 0T, Audi C8 A7 3. I went with an APR high flow cat & APR stage 2. I am considering APR ECU Stage 1 Software Tune - B8 A4/A5 & 8R Q5 - 2. 0 TFSI engine with the A4 (B8 Platform) Discussion - Is just the APR ECU upgrade worth it? - Two questions: 1) If I just want to get the ECU upgrade from APR and nothing else, is it worth it? 2) Long term, is the APR Stage 1 ECU Tune APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2. qpc, dub, hur, qhv, wwf, iwu, dxo, xqn, wbs, hol, ebz, fyg, ala, tib, iun,