Any videos of this running yet? Very excited to see the results!
Not certain what you are looking for in a video but I have been driving the Q5 with Malone Stage2 + BuzzKen Exhaust system and I am very happy with the result.
First, thanks to Ken (Buzzken Exhaust) and Mark (Malone Tuning) for taking the time to develop the exhaust and tune combination for the Q5 TDI, it took the better part of the 2 weeks that I was on vacation for the development work and Ken took very good care of the Q5 while he had it. He was even kind enough to drop us at the airport and pick us up on our return. Now that's service.
Subjective observations:
The Stage2 tune with stock exhaust gave a noticeable increase in HP and Torque. Performance improved from initial throttle right through to the top with less turbo lag and wider power band. The engine may have been hitting the EGT limiter and limiting power briefly however this was not really noticeable. If you want a stock Q5 TDI with a performance boost I would recommend that you get this tune.
Stage2 + Exhaust improves on the above by taking away the restrictions and allowing the car to breath. Very refined, performs like stock but with quicker response at all levels, put your foot to the floor and OMG, it just wakes right up. Instant

. Fueling has been increased and it no longer hits the EGT limiter.
Sound wise, the exhaust is very similar to stock as it uses the stock mufflers. It just seems to have that little extra bit of rumble that says its special, I mean its almost like you can feel it but not hear it. The Q5 just feels different, more confident, more energetic and more powerful. I think that this is what a tune should feel like on an Audi.
I am not able to give you any hard numbers but I know that Stage2 + BuzzKen Exhaust is what you want if you are ok with pushing the limits a bit.
