Propane injection kit remote adjuster installation instructions
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Find a suitable location to mount the controller that is within easy reach of the driver.

(1 ¼ inch opening is required.) (Light assembly requires a 5/16 opening)

You will run three hoses from the back of the controller through the firewall. This spot is usually next to the wiring harness for the system switches.

Using the “boost pressure” hose that currently runs from the engine to the bottom of the Powershot regulator and cut it close to the spot were you came through the firewall with the new hoses.

You will splice the red hose and the blue hose to this line.

Attach and splice the red hose to the existing system black boost pressure line (the one you just cut coming from the engine) using one of the hose barb splices supplied. Attach the blue hose to the black hose going to the Powershot. (This is the other end you just cut) using hose barb splice. The red hose can not be mounted directly to the engine and away from excessive heat.

Next, find the hose coming from the propane injection system going to the air intake. This is the propane feed line. Make a careful splice into this hose and install a tee fitting. Attach the green hose to the tee fitting and secure the black hose only with clamps.

Now moving to the inside the cab attach the red hose to the port marked B on the back of the controller.

Attach the blue hose to the port marked A on the back of the controller

Attach the green hose to the to the only hose barb left. This is a vent line, which will purge air to the air box via the propane feed line.

To mount the activation light in the cab.

Determine a suitable location for the activation light. Try to find a location that is visible but is not in direct view of the driver. The light will go off and on often and this may become a distraction during night driving.

Attach the black wire to the black wire going out to the system's Lock Off valve. Using the supplied wiretap, now hook the other end of the same wire to one of the black wires on the light. Now attach the red wire to the other black wire on the lights. Attach the other end of the red wire to the “ Common C” “ terminal on the pressure switch located on the side of the controller.

Attach the yellow wire to the “normally open/ n/o”terminal on the pressure switch. Attach the other end of the yellow wire to the yellow wire going to the lock off valve using the supplied wiretap.

The red and yellow wires running to the pressure switch are pre-wired for your convenience.

The start time for your injection system now needs to be reset.

To reset your start time to 5 psi: (follow original adjustment instructions) or:

Remove both hose from the system

Turn on the system.

(Blue light on)

Apply 5 psi air pressure to the bottom port of the system, which will be simulating boost pressure and adjust the start time so that it just starts to flow at 5 psi. (This is a very slight breeze), and lock down the jam nut. Attach the hoses back on the Powershot.

IMPORTANT- These adjustments should only be made outdoors in well-ventilated areas ****Propane is extremely flammable. ****

Typical Applications:

When towing a trailer down the road, if your boost pressure is 15 psi you can now turn the the adjustment knob on your new in cab controller to the point the new light just comes on this means you are applying 5 psi to the Powershot even thought your engine is making 15 psi.

To make sure that you have set the controller correctly, the light should go out when you lightly let off the throttle or drop boost pressure [This means your propane flow has stopped.]

Note: For the best city driving, you should back off the controller [turn knob counter clockwise] so the light will come on when the engine makes 5 psi of boost.

Photos Courtesy Chevrolet®, Dave Huntoon & Diesel Performance Products


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