From DM in Oregon (Stage 2 upgrade): "Holy crap! I just got back from my second 500+ mile trip in the S6 (have had it almost three weeks) to find the ECU waiting for me, did a quick swap, and went for a spin. Fantastic performance upgrade, from "a bit more than adequate" power to "scary-fast!" With limited testing, the stock ECU was hitting about 16 psi max (12-14 sustained), MRC Stage 2 is hitting 21 psi max (19-20 sustained). This is near sea level, about 40 deg F, 92 octane, car well warmed up. Also seems to spool up faster, pulling much harder through the lower gears, and max boost from 2,500 rpm in 5th. Sweet!"
From JB in West Virginia (Stage 2 upgrade): "This is how the car should have come from the factory!"
From IA in the UK (Stage 2 upgrade): "I just wanted to express my thanks for the modifications to my UrS4. It now has with the stage 2 kit the sort of performance that brings a really big smile to my face whenever I drive the car. Bang for buck it's unbeatable value, a total transformation."
From JM in Texas (Stage 2 upgrade): "Just wanted to say thanks again for the chip tuning, Bob. Car's running very well, and I cranked the WG spring down 6 turns, where it seems to be running optimally. Nice pull to it, and I don't feel like the car's quite so inadequate any more."
From AR in California (Stage 2 upgrade): "The MRC chip made a huge difference in my S4's performance. But I am even more impressed with the great, personal service Bob gives to his customers."
From RB in NY (Stage 3 [RS2] upgrade):
"Hey Bob, What can I say - the chip - injector - tube - turbo combination you recommended is absolutely awsome. Lime Rock was never as much fun as it was last weekend. The torque is awsome and the car leaped out of the turns. 110 on the straight and I was holding back - 100 was the fastest before.
Mid Ohio is next and I'll really be able to open it up.
Can't thank you enough."