DFI Program Question?

[Cheeseburger]

I need to upgrade my 72lb inj's to 83lb inj's, that being said, will i have to change my program for the larger inj's?
I am thinking i should not have to change/alter the fuel map.

Curious because this is my first inj upgrade with dfi.

TIA.

 

[Scott231]

Short answer is Yes, if you want a 'perfect' tune.

Long answer is that it kinda depends on whether this is a Gen 6 or 7. Depends on what AFRs the car was running at with the 72s in comparison to the Duty Cycle.

 

[Cheeseburger]

Thanks for the reply, it is a gen 6 unit with a v.i.c.

 

[Reggie West]

You will want to fine tune the program.

When you switch to bigger injectors you have to do some work on the map. Some not re tune the whole thing.