DFI running lean

[BLN355]

I am running a vortech w/ aftercooler, 355 etc...with
DFI (Tuned by Job Spetter Jr). However, a little problem today with it going lean at 10lbs with a/f at 14:5:1? Any ideas out there? Increasing the map 10% will cause it to run rich throughout right?
thanks
lupe

 

[Reggie West]

You are right. If you use the multiply function it will add 10% to the whole map.

If you are only going lean at 10 psi you can find that group of cells and add fuel to those cells only.

You may want to make sure you are not lean across the board. Usually the whole map is either too rich or lean. Sometimes the map can be both. Rich on the low end and lean on the top end.

Have a look at where the motor makes peak torque that should be the greatest number on the map. After that point the cells should decrease from that point.

Make sure you readings on the A/F ratio are correct, you dont want to blow the thing up....