It took more than 30 pumps since the car wasn't as warm as it should've been, but i needed the work out anyways.
Letting the engine oil warm up a little is a good idea, don't do it when it is at full operating temerature. The plastic body gets soft and it will implode and you'll be mopping up 7 liters of hot oil. I've seen it happen at least twice.
Which O2 sensors are you replacing? If you gutted your cats, don't even bother with either of the post cat sensors. They are only there to monitor converter efficiency. If you don't have any catalyst in there, it's going to set the same fault. You'll need to wire in a resistor to simulate the voltage difference that would be present if the cat was in place.
That new indoor concrete skate park is amazing. I'm getting ready to send him an email and ask if he wants to own a shop and turn out some high line Audi's. I couldn't really picture myself working for someone else again, but I'd go to work for Bobby Diesel.