How did you set your A/F ratio?
Just in case, simple way to do it is to unplug the O2 sensor and plug a voltmeter into it, wait for the car to warm up, then adjust your A/F so it reads as close to .5 volts as possible. If it starts jumping around all weird and shit, you still have vacuum leaks but if it stabilizes you're golden. That's if you're running a single-wire O2 sensor. Even if it starts jumping around a lot, it's a sign that your ECU and associated bits are doing what they're supposed to and you just need to do some housecleaning in the vacuum department.
There is no O2 sensor on this guy. Danny tuned the A/F for the FD on a car that had an O2 and verified that it was accurate. As far as vacuum policing - I've replaced 100% of the lines with new lines and Danny and I did quite a bit of the spray/idle check and only found variance near the injectors - which after that I replaced the intake and gasket and then injector seals and cups.
trav, are you sure its fuel infection issues?
you might be having an ignition problem, especially if its constant...
I had a problem starting the scirocco recently, expected the worst... it ended up being fouled plugs.
I'm really not sure. I was at such a loss I finally just brought it into waldenburg performance here local to a good friend. Man, I swear I about swapped everything in the engine bay. Plugs was one of the first things I checked, new wires etc but honestly didn't check anything else ignition wise. I spose that was a mistake.