EPROM tuning head start

[WEG1192 at aol.com]

In a message dated 08/08/2000 8:04:37 AM Eastern Daylight Time, 
nikog at mediaone.net writes:

<< Using just a DVM is a GREAT way of doing your first chip. You'll learn a 
lot
 with that method. Turn off closed loop/adaptation, then tune the maps to get
 450mv from the O2 sensor at all PT map locations. Note, you'll NEVER get the
 O2 to read 450mv; it'll either be above or below it. If changing the map
 value by one digit makes the O2 reading go from below to above 450mv (or
 vice-versa), rest assured that the tuning at that point is more than close
 enough. Heck, 5% off is close enough. This is exactly how I tuned my
 turbocharged M3. >>

So you disconnect the O2 to keep the ECM in open loop but still use the O2 
voltage to monitior the tune? Otherwise, how do you keep it in open loop? And 
are you saying it uses the exact same tables during open loop as in closed 
loop, it just uses a temp based adder for cold running?
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