changing injector size w/FAST

[Six_Silver]

Do I need to do anything to my fuel map, or do I just need to change the injector size from 650cc to 720cc in the computer? Will the values in the fuel map change by themselves, or do they stay the same but the computer knows to change its pulse width and whatever else for the new injectors?

 

[bobc455]

You are not changing the desired a/f ratios, and you are not changing the airflow charachteristics (VE).

Therefore, the only change you need to make is the injector size. The FAST will take care of the rest in the calculations.

-Bob Cunningham

 

[fast4d]

when I changed from 50# to 72# low impedence I had to make some slight changes to the VE. it was making more corrections while in closed loop.

 

[Six_Silver]

Ok, thanks.

 

[Grandnat]

Yes, you will be making changes to the VE table.

pretty straight forward though... you will see when it is correcting too much and just adjust accordingly