What exactly does scaling down the low part of the Main VE table do? I thought it would make the LTFT at idle more positive, but it does not have that effect.

 

It will lean out the car when it is operating w/o the maf. Like starts. It has the same effect as what would raise the ltrims, but since the pcm is not in closed loop you don't see a change in ltrims.

 

I did, that took care of the cold starts. Not as rich anymore.

But now it is surging, with a high-idle. And my LTFT's went positive.
I will put a few miles on it and let the computer learn. But I thought that the VE table would not affect anything when in closed-loop?

 

In closed loop it won't. I thought you were talking open loop. I think I've read about too much timing at idle causing surging. That would be changed unter the base spark tables.

 

Sorry, open-loop everything seems fine since I changed the VE. Its just weird because the issues I am having now is when I am in closed-loop. And modified the VE Table.

Right now the spark table are still stock.