Product Name:  
FPR  
Product Description:  
Product Number:  
Document Version:  
Fuel Pressure Regulator  
TS-0401-110X  
V1.00 Rev B  
-
-----------------------------------------------------------------------------------------------------------------------  
IMPORTANT NOTES ON YOUR FUEL PRESSURE REGULATOR  
Do NOT remove or adjust the collar.  
Turbosmart accepts no responsibility whatsoever for incorrect installation of this product which is potentially hazardous and can  
cause serious engine damage or personal injury. Ensure there are no leaks in your fuel system after installation and you have  
checked fuel suitability.  
Use only high quality fittings ensuring maximum sealing reliability. Optional Turbosmart fitting kit available.  
Ensure that all plumbing is appropriately secured, is the correct size and chemical rating for your application when fitting your FPR.  
Your fuel pressure regulator should be mounted at least 100mm from any significant heat source.  
Gauge port is 1/8” NPT.  
RECOMMENDATIONS  
Turbosmart recommends that your fuel pressure regulator (FPR) is fitted by an appropriately qualified technician  
Turbosmart recommends that the engine Air-Fuel ratio checked once fuel pressure is set.  
Optional Turbosmart fuel rail adaptor kits: TS-0402-100X (Honda, Nissan, Toyota, Mitsubishi, Subaru, Ford, Audi and more supported)  
Optional Turbosmart fuel filter kits: TS-0402-113X (-6 to -10 AN)  
Optional Turbosmart fuel fitting kits: TS-0402-11XX (NPT, -6 to -10 AN)  
-
-----------------------------------------------------------------------------------------------------------------------  
HOW TO INSTALL YOUR FUEL PRESSURE REGULATOR  
TOOLS REQUIRED  
External circlip pliers to suit 27mm circlip  
Non-marking spanners to tighten fittings.  
KIT CONTENTS  
Please check that the following items have been provided in your FPR kit.  
Quantity  
Description  
Turbosmart FPR  
Use  
1
1
1
1
Main unit  
27mm External Circlip  
Mounting Bracket  
Secures the mounting bracket to the main unit  
Mounting bracket used for remote mounting the FPR  
Turbosmart sticker  
Turbosmart Sticker  
Figure 1 - Kit Contents  
FPR Base Pressure Adjuster  
(30-90psi BASE)  
FPR OVERVIEW  
Pressure Adjuster Locknut  
Manifold Pressure  
Reference Port  
NON-Removeable Collar  
1
/8” NPT Gauge Port  
AN ORB Fuel Inlet Port  
AN ORB Fuel Inlet Port  
AN ORB Fuel Return  
Port to Fuel Tank  
Mounting Bracket Circlip  
Groove  
Figure 2 - FPR Overview  
1
FITTING YOUR FPR  
Locate fuel pressure feed line, base pressure  
1
and determine mounting location  
Fit Gauge or Sensor Port (OPTIONAL)  
3
This line is usually found by identifying your injectors, the fuel rail This step is optional. Prior to mounting the FPR, install 1/8” NPT  
the injectors are mounted to and then the line that is feeding the gauge or sensor. Unscrew existing 1/8” NPT blank anti-  
fuel rail. Turbosmart recommends determining your current base clockwise with 3/16” hex key. Apply thread lubricant and screw  
fuel pressure with your existing regulator to identify a reference in clockwise until finger tight, then tighten further 1-2 turns for  
for the base pressure you set the new regulator to. This can be seal. Turbosmart gauge kit optional TS-0402-2023.  
done with any reputable pressure gauge at idle and with the  
vacuum hose disconnected from the regulator. Take time to  
determine where you wish to mount the FPR in the engine bay.  
Some examples of placement for your FPR are:  
Mounted against chassis  
Mounted onto fuel rail  
Mounted onto intake manifold  
CAUTION!  
Do not place the FPR near a significant heat source as this may  
lead to severe engine fires.  
Prepare FPR for installation  
2
Prior to mounting the FPR, install fittings into FPR with high  
quality AN ORB fittings ensuring the O-Ring is present. Optional  
Turbosmart fitting kits available TS-0402-11XX (NPT, -6 to -10  
AN)  
Please note that O rings are not used in the FPR 800 due to  
the tapered thread. A fuel safe thread lubricant should be  
used.  
Mounting your FPR  
4
With all fittings installed onto the FPR, the FPR can now be  
mounted. Place the mounting bracket over the base of the FPR  
in the orientation of your choice, place the circlip over the top of  
the mounting bracket and with external circlip pliers expand the  
circlip and push down until the circlip clicks into place. Your  
mounting bracket is now successfully installed and you can now  
mount your FPR in your specified location. Proceed to connect  
your fuel lines.  
CAUTION!  
Ensure correct installation of fittings to prevent high pressure and  
temperature fuel leaks which can lead to extremely dangerous  
fires. See below the O-ring.  
Start engine and check for leaks  
5
Congratulations, your FPR is installed and ready for use.  
Double check all fittings, lines and mountings then proceed to  
activate fuel pumps and check for leaks.  
CAUTION! If fuel leaks are present switch off engine  
immediately and rectify leaks.  
See over for troubleshooting steps.  
2
ADJUSTING YOUR FPR  
Remove signal reference hose and loosen  
13mm locking nut  
Tighten 13mm locking nut and reconnect  
signal reference hose  
1
3
Remove vacuum/pressure signal reference hose from nipple and Once base pressure has been successfully set, reconnect the  
loosen 13mm locking nut on top of FPR anti-clockwise to allow signal reference hose and tighten the 13mm locking nut  
for free movement of the adjuster screw.  
preventing the adjuster screw from self-adjusting. Your FPR  
has now been adjusted.  
CAUTION!  
An incorrect setting of fuel pressure may cause your  
engine to run lean with the potential for detonation.  
Turbosmart recommends air-fuel ratios are checked  
immediately after base pressure adjustments.  
Adjust base pressure  
2
Ensure battery voltage is sufficient and idle engine. Observe the  
base pressure on the gauge or your data logging device, turn  
the adjuster with a 4mm hex tool clockwise to increase fuel  
pressure and anti-clockwise to decrease fuel pressure. The  
example below is an increase in fuel base pressure.  
CAUTION!  
Avoid screwing adjuster in forcefully as this will not allow for  
the device to regulate fuel pressure and can cause damage  
to your fuel pumps  
3
TROUBLE SHOOTING  
-
FPR Leaking Check fittings are tight and O-Rings are present or not damaged.  
-
FPR regulating below 30psi (275kPa) Ensure fuel pump pressure is above 30psi with no regulator, if fuel pressure is below 30psi, the  
FPR will not regulate until inlet pressure exceeds 30psi. Possible faulty fuel pump/electrical connection.  
-
-
-
FPR regulating above 80psi (345kPa) Ensure fuel return line is not restricted causing a pressure build up for the regulator.  
FPR not holding base pressure Ensure fuel pumps are active.  
Failing the above, submit a technical request to [email protected] with information of your engine, fuel type and photos of installation  
4