Why is the low map area of my Low VE table is rich? I have 80lbs injectors at 17psi with BPC of 94 I didn't have this problem when I had the police injectors installed. I tried increasing the injector correction offset (at 747) and the LC1 isn't installed yet.

 

Increasing the injector offset made it worse.

 

Those areas do not appear to be used. Looking at the graph the point of 400 rpm, 20 KPa is in front. Going up the left at 20 KPa, I would pull those VE values down to match the 25 KPa row.

Then going to the right, the 400 to 700 RPM, up to 50 KPa could also be pulled down. This can be done easily in TP with the graph displayed. Just point, click, and drag with the mouse. Then save.

The areas in question are hardly used during engine operation. They can be left as is, but I never like the way it looks when viewing the graph.

RBob.

 

aren't those cells used to calculate dfco fuel?

 

Not always, may use some. I know, vague. It really depends upon the engine setup. A stock mild cam can hit the 20 KPa at 1600 - 1800 RPM. But if it goes into DFCO then the fuel is turned off and it doesn't matter what the VE is.

Once a more then stockish cam is installed, an automatic trans also contributes to this, it becomes rare to have the 20 KPa area at lower (< 2,000 RPM) used.

RBob.