42.5 injectors tune

[fbm]

So I started with a somewhat fresh tune stock maf ve and changed my ifr 87.4% or something like that and after a day or two of driving I log a run with different driving conditions for a 've tune using table modifier I am around -8 @ idle after using table modifier it changes it to -20 anybody know why

[91parkave]

If you just changed injectors why are you messing with maf or ve. Put in the proper injector slope and ride out.

[CrazyGuy03]

Multiply by 1.25

[chrsmi1]

So I started with a somewhat fresh tune stock maf ve and changed my ifr 87.4% or something like that and after a day or two of driving I log a run with different driving conditions for a 've tune using table modifier I am around -8 @ idle after using table modifier it changes it to -20 anybody know why

Thats right using DHP. I did the same thing for my 42# injectors on pump gas and it works, but it does run rich. Not -8 rich, but still. Just adjust it down a little more. Try like 85 or 83 % the original value.

And parkave is right. No need to do a full tune if just changing injectors. It's always beneficial, but maybe unnecessary. Just change your flow rate, reset your trims and drive.