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Pretty much just as I described. By disconnecting the battery cable, you take the power away from the ECU. Reconnecting it effectively hits the "reset" button on the ECU and you'll find the power is back. What I can't explain is why this occurs in the first place but you'll find with VAG-COM is that...

Before you do anything drastic or pay a lot of money try this: disconnect the battery and wait one minute. Reconnect the battery and take it out for a spin. You'll find the power is back.

My understanding is that the APR is a roots design, whereas PES will be a lysholm (much more efficient). I called APR and, sure enough, it's on hold. No definite due date. The Motodyne beltless sounds really attractive but can't say I've ever seen or read of one in use. The company seems very thin o...

Just got an email from PES tuning indicating they are in the final stages of creating a supercharger for the 4.2L V8. I think this is going to be primarily for the A8. I asked them about the S4 and they stated they didn't think there was much interest. MTM's supercharger is waaaaay too expensive for...