tunning advice and help for bigger injectors in 5.9

[Scarface]

I am needing sum advice and help when tuning with bigger injectors in the common rail 5.9 and 6.7 cummins

[Scarface]

what I am asking is how to go about on the main injection table on the injectors. I got it figured out on a duramax. just the dodges is still fairly new to me.

[tylerltr450]

you need flow charts for the injectors. It should be the same logic behind it between dmax and cummins.

[Scarface]

thanks tylerltr but what do u do for the guys who cant bring u flow charts for the injectors?

[tylerltr450]

Guess lol. I only have experience tuning 60% over injectors which are in my truck. Im not sure what size your looking at tuning.

[Scarface]

well I am working with two trucks one has 80% exergys and the other truck has 180hp ii (90%)

[tylerltr450]

for my truck I think i took up to 25% out of pulse

[Scarface]

did u take it out of the entire table. I know on the dmaxs I took 100 out then do my percent change then add a 100 back into the entire table.

[tylerltr450]

No normally I take out of the main parts.

[Scarface]

what main parts do u take it out of? on the dmaxs I do entire table

[tylerltr450]

Everyone is different :secret: lol

[Scarface]

well I can give it a try in the lower left corner and across to see how she will react to it. thanks for the help bro:good:

[EverydayDiesel]

you need flow charts for the injectors. It should be the same logic behind it between dmax and cummins.

Can you explain that please? I have the flow sheets but what exactly am I comparing them to?

[tylerltr450]

Can you explain that please? I have the flow sheets but what exactly am I comparing them to?

You need to know how much it flows more then stock so you can adjust by % so you can make bigger injectors driveable.
example if 60hp injectors flow 25% more then stock you need to take 25% out of areas in the pulse width to help keep smoke down.