A friends tuned S5 ( "Auto Tune Heinz") up to 385hp (rolling road confirmed) and they also fitted a new Titanium exhaust line made by Akrapovic with the user controlled valves

valves where delivered for a Porsche, so they haven't been fitted yet, so this is how she sound at full breath

http://www.youtube.com/watch?v=XIEOt5PjbfA

http://www.youtube.com/watch?v=ey5kMPnUBeA

Let me know what you guys think...

Other friend has an S3 with Milltek exhaust, new high flow fuel pump, other injection system and is boosting 330hp

 

Sounds a little raspy to me, I would have gone with milltek on the S5 too.

 

Just looked at the stats from this tune, and you're a bit off with your numbers. It takes it to 375, not 485 lol..

 

Sounds like it has the same 'brap' (prob not the best way to describe that) as the c63.

 

Yeah Sorry Guys, got a lottle too excited

It's a confirmed 385Bhp with the ECU tune, filters and exhaust

 

385BHP or 385WHP? I've never seen an S5 dyno that high to the wheels.

 

I imagine it producing 385HP at the engine, not wheels