So my car is a 2000 5.5 Audi S4 Tiptronic B7. I don’t really have any previous history as far as stuff that has been done to the car other than what I have done. I have lately then getting into the diagnostic part of cars. Like using the MAF sensor and the map sensor to pinpoint lean conditions like vacuum leaks, and using stuff like fuel trims…etc. Lately my car has been running a little rough here in there. The car will be at idle, and all of a sudden it feels as if one of the coils drops off for a few seconds. The engine drops in RPMs, runs a little rough and then Smooths back out. How do I go about logging with vcds? I have a Ross Tech cable but I’m not an expert on using it to do logging. I don’t drive around with it plugged in, so capturing it as live data will be hard. Would this be stored somewhere as freeze frame data?
