Supported Models:

2020+ XP Turbo S and XP 4 Turbo S, all trims (excludes EVAP)

The vehicle shown in this document is a modified 2021 Polaris RZR Pro XP. Your vehicle could have parts that may or may not be present in the pictures. The images are meant to be a reference. If you have any questions regarding your installation, please reach out to T1 Race Development at support@injectordynamics.com.

Item List

Removing Fuel Pump Module

1. For two-seat vehicles, remove both seats. For four-seat vehicles, remove both rear seats.
2. Gain access to the fuel pump by removing the firewall panels located behind the removed seats.
3. Disconnect the power connector and crank the engine to bleed fuel pressure. Disconnect the battery once the pressure has bled.
4. Disconnect the fuel line from the pump module. There will still be some fuel left in the fuel line.
5. Remove the fuel pump ring and lift the fuel pump module out of the tank (drain as much fuel back into the tank as possible).

Modifying the Factory Fuel Pump Module for Return Line

1. Place the bulkhead nut on the underside of the Top Hat and using a marker place a mark in the center of the nut. Use figure 1 as a reference for the return line location.

Figure 1: Return Line placement reference

2. Start by drilling a 1/8” pilot hole on the mark that was made in the last step.
3. From the top side of the top hat, drill a 7/16” hole. A Unibit is recommended but it is also possible to start with a smaller drill bit and step up to a 7/16” bit.
4. Install the -4 bulkhead fitting using the stat-o-seal on the top of the top hat and serrated washer on the bottom side. Use figure 2 as a reference for the orientation of the bulkhead fitting.

Figure 2: Return line reference.

5. Reinstall the fuel pump module into the fuel tank. Use figure 3 as a reference for all connections.

Figure 3: Fitting Reference

Fuel Rail, Injector, and Regulator Install

1. Remove the engine cover to gain access to the top of the engine.

Figure 4: OEM Fuel Line Reference

2. Disconnect injector electrical connectors.
3. Disconnect the fuel line from rail. There will be fuel left in the fuel line.
4. Remove the (2) bolts to uninstall the fuel rail.
5. Outside the vehicle, install the supplied fittings into the rail and regulator.
   1. Install the -6 ORB to 5/16” EFI on the inlet of the rail on the driver’s side of the car.
   2. Install the -6 ORB swivel fitting on the center port of the rail. The non-adjustable side of the swivel fitting needs to be installed onto the rail.
   3. Install the -6 ORB plug into the remaining port on the rail (passenger side).
   4. Install the -6 ORB to -6 AN fitting into the bottom of the regulator housing.
   5. Thread on the regulator housing to the swivel fitting until the threads bottom out, then back out one turn. Do not tighten the lock nut.
   6. Install the ID injectors into the fuel rail. (Apply some grease on all O-rings).
6. Install fuel rail and injectors onto the throttle body ensuring both injectors are properly seated (Take care not to over tighten bolts).
7. Orientate the fuel pressure regulator as seen in figure 5.
8. Connect the injector connectors using the supplied electrical adapters.

Figure 5: ID Fuel Rail Reference

9. Connect the vacuum hoses for manifold pressure reference:
   1. Cut the factory vacuum line as shown in figure 6 and push on the supplied Wye fitting onto both ends of the cut line.
   2. Insert the supplied 4mm vacuum hose onto the last leg of the Wye fitting.
   3. Trim any excess length of the vacuum hose and push onto the pressure regulator barb.
   4. Secure a 3” cable tie onto all hose ends.

Figure 6: Vacuum Line Reference

Mounting the FDM

1. Install the FDM as seen in figure 7. Using the provided M6 hardware, position the FDM as close to the firewall as possible without rubbing.

Figure 7: FDM Mounting Reference

Routing and Installing the Fuel Lines

1. Disconnect the OEM fuel hose from the pump outlet. Install the provided female EFI adapter onto the pump outlet.
2. Starting with the 6AN hose with 90° and 180° fittings, connect the 90° fitting to the EFI adapter. Use the picture below as reference.
3. Install the male EFI adapter into the 90° fitting of the 6AN hose with two 90° fittings. Install the OEM fuel line onto the male EFI fitting as shown in figure 8.

Figure 8: Connection Reference

4. Install the 90° fitting of the 4AN hose onto the return fitting on the OEM pump.
5. Route the hoses along the OEM fuel hose and secure them using the provided zip ties. Use figures 9 and 10 as reference.

Figure 9: Hose Routing Reference

Figure 10: Hose Routing Reference

6. Connect the 45° fitting of the remaining 6AN hose to the output of the regulator and route it along the OEM fuel hose. Use figures 11 and 12 as reference. Secure using the provided zip ties.

Figure 11: Hose Routing Reference

Figure 12: Hose Routing Reference

7. Install the adapters and connect all four hoses to the FDM using the image below. Ensure hoses are not rubbing on adjacent fittings. Take caution to not rotate the top cap while tightening. Use figure 13 as reference.
   • Port 1 – 6AN to 6 ORB fitting. Pump feed to OEM fuel hose (-6 hose with 90° fitting)
   • Port 2 – 4AN to 6 ORB fitting. Return to OEM fuel tank (-4 hose with 150° fitting)
   • Port 3 – 6AN to 6 ORB. Pump feed from OEM fuel tank (-6 hose with 180° fitting)
   • Port 4 – 6AN to 6 ORB. Return from fuel rail (-6 hose with 150° fitting)

Figure 13: Port Reference

FDM Wiring

1. Run the electrical harness along the fuel hoses to the center console. Route the red and black wires to the battery and the two gray wires to the OEM fuel pump. Cut off excess wire.

Figure 14: Wire Routing Reference

2. Cut the fuse holder wire loop to your desired leg lengths. Using the blue supplied butt splice, connect the red wire from the FDM to one of the legs on the fuse holder. Crimp a ring terminal to the other leg of the fuse holder.
3. Crimp the other ring terminal to the black wire from the FDM.
4. Using the supplied butt splices, splice in the gray wires from the FDM to the OEM fuel pump power (red/black) wire and ground (black) wire. It does not matter which gray wire is hooked to the OE pump power or ground. Shrink the provided heat shrink to cover the butt splices.
5. Connect the red and black wires to the battery.
6. Secure all wires with supplied cable ties.
7. With the electrical connector to the FDM unplugged, prime the fuel system to fill the FDM.
   1. Check for leaks.
8. Connect the FDM electrical connector and prime the system. Listen for the pump and look for the blue LED.
   1. Check for leaks.

Flash ECU

1. Generate ECU data by using the online generator located on the Injector Dynamics website at http://injectordynamics.com/utv/ and follow the directions to make the changes in the calibration.
2. Once the ECU flash is complete, start the vehicle ensuring that there are no leaks in the fuel system (Always have a fire extinguisher close by).

Reinstall All Remaining Parts

1. Once you have ensured there are no leaks, reinstall all body panels and seats in the reverse order of removal.