I am thinking.... What feedback from the car do I need to work on advancing the timing using a piggy back computer?

I take it I need to know Air/fuel mixture right? If I'm getting detonation or ping (vag com)
RPM (vag com)

Since the SMT-6 is cheap like $350, I am thinking, maybe I'll buy one, connect it, and then work at doing my own programming on it, the software is free, I actually have it on this computer.

What would be nice is if we could program it on the local garage's dyno with a FWD 12v A4. That would be some work but it would be possible. I bet I could slip them a $100 to keep the place open late one evening while I tuned the engine.

I have no reason for it though... I just think it would be cool to look at.

Mike

<center><img src="http://pictureposter.audiworld.com/44005/af_radio_far.jpg"></center><p>I plugged my gauge into the harness for the o2 sensor between the sensor &amp; the ECU.

Where did you get your switched power from? ground? Thanks!

Mike

which o2 should I tap into I have 4 of em ? pre cat post cat which bank? So many o2 sensors so little time, lol.

Not sure where I'd put it tho, thats the hard part.