Installation Instructions for Ram Cummins 6.7L Stealth Module (2019-2023)

Included With Purchase

(1x) Stealth Module
(1x) Wire Harness with Fuel Rail and MAP Sensor Connections
(1x) Selector Switch

Video Installation



Step by Step Instructions

Let your truck sit with the hood popped, doors shut and the key fob away from the vehicle for at least 20 minutes. It is important to keep the key fob away and the doors shut during the entire installation process. DO NOT bring the key fob near the vehicle or open any doors until AFTER the  module is fully installed and connections are verified. This allows the computer to 'sleep' and for your engine compartment to cool down. Failure to do so will result in a check engine light on startup.

Step 1:

Locate the Fuel Rail Pressure (FRP) sensor connector. It is located in the back of the engine bay towards the drivers side of the engine block. It is tucked away but easily recognized by the the yellow tab on the back of the connector.

Slide the yellow tab up and press on the tab to unplug the connectors. If you are having trouble, use a pick to help slide up the tab.

Sensor Connections
Sensor Connections

Step 2:

Connect the wire harness provided into the connectors you just unplugged.

Connect “B” from the wire harness provided to the purple connector on the truck's harness. Connect “A” from the wire harness provided to the FRP sensor.

Sensor Connections

Step 3:

Locate the Manifold Absolute Pressure (MAP) sensor connector. It is located on the drivers side on the intake manifold. Press down on the grey tab and unplug the connectors.

Sensor Connections

 Step 4:

Connect “D” from the wire harness provided to the grey connector on the truck's harness. Connect “C” from the wire harness to the MAP sensor.

Sensor Connections

 Step 5:

Plug the grey connector into the Stealth Module. Make sure this is pushed in all the way! Verify all connections are tight and straight.

Sensor Connections

Turn Dial Clockwise

Stock - Low - Medium - High

Low - Towing at or near the vehicles maximum legal tow rating and low traction situations.
*consult your owners manual for vehicle tow rates

Medium - Moderate towing, around the middle of your vehicles tow rating, and ideal for everyday driving situations.

High - Maximum performance. Ideal for empty highway cruising.

The switch must remain plugged into the Stealth Module to remain in the desired setting. Do not switch power levels with the engine running.

You will see the best results when the selector switch is left in one setting for as long as possible.

Check Engine Light or Hard start on Install?

The most common reason for a check engine light on install is due to the truck not being asleep. If the Stealth Module has already been removed, please start the installation process over while giving special attention to the instructions above step 1. If the Stealth Module is still installed, verify connections and disconnect the negative terminals on your battery for a hard reset. Events that will wake the truck up: Not letting it sit for 15 minutes, opening/closing the vehicle door, having the key near the truck during install.

The most common reason for a hard start on install is due to improver connection. Please verify that all connections are straight and pushed in all the way. Be sure the harness is pushed in tight to the Stealth Module as well.

If you are still having trouble, please give our 24/7 tech support a call at (888) 613-4304

Remove the Stealth Module Before Service

Before going in for service, please remove the Stealth Module so that the truck is back to stock. This allows the technician to have a fresh base line when performing any work.