Cummins N14 CP fuel upgrade

What cpl do you have and how much power do you want? Usually 475 can go to 525/1850 with just ecm reflash

 

Mine is a 460 /1650 Celect Plus from the factory, and I had ATE here in Phoenix flasher to 565/1850.
The truck was like night and day after I got it back. I’m at right about 2 million on the engine without a rebuild, I’ve only done rods and mains internally.

 

I think factory specs will top out at 1650 torque. You're best option IMO would be an aftermarket tuner.

Watch it though, they are often hot

 

You need to find a celect plus ECM

 

What is your engine serial number?

 

Largest factory setting for the C plus is 525/ 1850 torque. There are also 525/ 1650 programs too, but 1850 is doable and common. I would avoid a hot setting.... the N-14 does not have the lower end capable of standing up long term to anything more than the 525/ 1850.

 

They can take the power, what they can't take is the low rpm torque application.

Cummins has 855 in gen set applications at 605hp, they don't have fretting issues, it was not until cummins tried to compete with cat and recommended pulling engines down to 1200rpm that the block fretting started happening, if a person drives a N14 like an old mechanical they will not have any bottom end issues.