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Oscar,
The VE table just needs to be tuned. I assume your are using the default RPM columns I sent. Here is what is happening.
As the rpm goes up, you get MORE vacuum (yes more, because your throttle is still closed during idle). As you get more vacuum in your 950 rpm column your probably giving less fuel which causes the engine to lean out and falls back to your 750rpm and the ECU richens the mixture which starts the whole process over again.
You need to play with the vertical column (vacuum column) to get rid of the hunting. Creating two rich points on either side of the target rpm to keep the engine locked at that rpm.
Changes with the laptop are easy so play around with it.
The most likely reason temperature is playing a roll, is because with a cold engine, the ECU is in "Cold Enrichement" mode where extra fuel is being dumped which keeps the engine out of the lean condition.
Cheers,
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Tony
'78 911SC with BITZRACING EFI conversion kit
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