even while running, the adaptations don't start getting adjusted by the car until the the O2 sensors are at operating temperature and the system is in closed loop status. And then they are adaptation values, so they'll always change to keep the system at equilibrium. if you leave something super important unplugged you'll know right away because the car won't start or it will run very rough (limp mode). Then when you correct the problem, it will run normal, just with a fault code. To the DME it's the same as if that part failed.

Now, having said all that. You don't need to bleed the system to pressure test it. If it holds pressure and nothing is dripping, yay! If something is leaking, you've just spent a bunch of time bleeding the system and topping it off only to have to possibly open it back up again. Good thinking on checking the repairs before completely reassembling though. It is always lame having to dismantle everything after finding out a hidden hose clamp wasn't tightened all the way or a bolt was left out...

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Olympic Peninsula, WA, USA
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2005 Mini Cooper 100k, British Racing Green/Silver-Black
04/2002 4.6is 140k, Silver/Black-Alcantara *FOR SALE*
1989 325iX 270k, Diamond Black/Black
1984 318i 370k *SOLD* (First Bimmer)
Honorable Mentions: '71 2002, '87 325, '90 325ic, '92 525it, '93 325i, '94 530i