Just spoke with Don Istook of Istook Automotive who races Audis nationally. Randy Posbst is driving for him this year in the GS class in Grand Am. Revo has come up with a new software that does not require a chip for installation and flash loads straight to the ECU through a port. In his S4, 2001 model, it increased the torque 40 ft lbs and the h/p 30. This is a huge increase for a retail cost of $399 and supposedly cannot be detected by the factory computers. They also have it set up so you can get a 5 hour free download that erases itself after five hours to allow you to drive the car and see if you like it or not before purchasing. Sound really cool. They can also install an on/off switch that will allow you to toggle between stock and performance settings. Cost is $399 for 4 cylinders, $499 for 6 cylinders and $599 for V8. They even have one for the new RS6. With it, the horsepower increased from 450 to slightly over 500. And all for $599. Any of you with Audis might look into this. Istook was running 2nd in class on Friday behind the 1st place Porsche and he said they were pacing themselves and could have passed the Porsche but unfortunately broke a left rear CV about an hour into the race. Did a 2.05 qualifying lap in the S4. I have no association with Istook Automotive but thought you might like to see this. Aren't electronics great??????????