Take full control of your Cummins dual CP3's using your just your ECM. The CP3X2 harness allows you to control your Cummins dual pumps without an expensive dual pump controller. We recommend multiplying the stock FCA current table (D0787) on the Cummins ECM's by 1.6-1.7 as a place to start. The FCA current varies from truck to truck based on the solenoid characteristics, age, and idle lift pump pressure. Higher lift pump pressures at idle will require more amperage at the top of the table (low desired fuel flow) to keep the rail at it's target pressure. If the truck will not start after multiplying the table by 1.7, revert back to the original tune and multiply by a smaller number until the truck starts easily, yet maintains the target rail pressure at idle. This is one of the more time consuming calibration procedures on heavily modified trucks, so make calculated changes, so that you can dial it in as quickly as possible. Once you have the truck idling at the correct target pressure you may need to modify the middle and lower portions of the table to prevent rail pressure overshoot or undershoot. Again, methodical changes in the FCA table will yield the best results. Use the EFILive Scan Tool to log your changes and adjust in the Tuning Tool as necessary. Keep in mind, more current is less flow, and less current is more, zero current being full flow from all pumps. Theoretically you should be able to control 3 pumps with the 5000mA of current that the FCA driver is capable of. This may shorten the life of the driver in the ECM so it's best reserved for competition use.

Warranty

This Part Fits:

Year	Make	Model	Submodel
2003,2005-2010	Dodge	Ram 2500	Laramie
2003-2010	Dodge	Ram 2500	SLT
2006-2007	Dodge	Ram 2500	Sport
2003-2010	Dodge	Ram 2500	ST
2008-2010	Dodge	Ram 2500	SXT
2010	Dodge	Ram 2500	TRX
2006-2007	Dodge	Ram 2500	TRX4
2003-2010	Dodge	Ram 3500	Laramie
2003-2010	Dodge	Ram 3500	SLT
2006-2007	Dodge	Ram 3500	Sport
2003-2010	Dodge	Ram 3500	ST
2008-2009	Dodge	Ram 3500	SXT
2007	Dodge	Ram 3500	TRX4
2013-2018	Ram	2500	Big Horn
2011-2018	Ram	2500	Laramie
2014-2015	Ram	2500	Laramie Limited
2011-2018	Ram	2500	Laramie Longhorn
2016-2018	Ram	2500	Limited
2013-2015	Ram	2500	Lone Star
2012-2016	Ram	2500	Outdoorsman
2011-2018	Ram	2500	SLT
2011-2013	Ram	2500	ST
2013-2018	Ram	2500	Tradesman
2013-2018	Ram	3500	Big Horn
2011-2018	Ram	3500	Laramie
2014-2015	Ram	3500	Laramie Limited
2011-2018	Ram	3500	Laramie Longhorn
2016-2018	Ram	3500	Limited
2013-2015,2017	Ram	3500	Lone Star
2011-2018	Ram	3500	SLT
2011-2013	Ram	3500	ST
2013-2018	Ram	3500	Tradesman