Product Name:  
FPR Low Pressure (LP)  
FPR  
TS-0404-10XX/11XX  
V1.00 Rev A  
Product Description:  
Product Number:  
Document Version:  
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IMPORTANT NOTES ON YOUR FUEL PRESSURE REGULATOR  
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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.  
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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.  
Ensure to relieve fuel pressure before removing OEM Fuel Pressure Regulator  
Your fuel pressure regulator should be mounted at least 100mm from any significant heat source.  
Gauge port is 1/8” NPT.  
RECOMMENDATIONS  
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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 filter kits: TS-0402-113X (-6 to -10 AN)  
Optional Turbosmart fuel fitting kits: TS-0402-11XX (NPT, -6 to -10 AN)  
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HOW TO INSTALL YOUR FUEL PRESSURE REGULATOR  
TOOLS REQUIRED  
Non-marking spanners to tighten fittings.  
Allen Key Set  
KIT CONTENTS  
Please check that the following items have been provided in your FPR kit.  
Quantity  
Description  
Turbosmart FPR  
Use  
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2
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1
Main unit  
M5 Mounting Screws  
Mounting Bracket  
Turbosmart Sticker  
Secures the mounting bracket to the main unit  
Mounting bracket used for remote mounting the FPR  
Turbosmart sticker  
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FPR OVERVIEW  
1-8NPT  
FPR Base Pressure Adjuster  
(3-20psi BASE)  
Pressure Adjuster Locknut  
Manifold Pressure Reference Port  
Can be used as breather or  
blocked off in carburetor vehicles  
NON-Removeable Collar  
FPR Bracket  
1/8” NPT Gauge Port  
NPT Fuel Inlet Port  
NPT Fuel Inlet Port  
NPT Fuel Return Port to  
Fuel Tank  
FPR – LP – OVERVIEW  
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FITTING YOUR FPR  
Locate fuel pressure feed line, base  
pressure and determine mounting  
location  
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CAUTION!  
Ensure correct installation of fittings to prevent high  
pressure and temperature fuel leaks which can lead  
to extremely dangerous fires. See across for  
example of ORB fitting – note the O-ring.  
This line is usually found by identifying your  
carburettor, the standard OEM Fuel pressure  
regulator will be mounted to a return line or feed line  
to the carburettor. Turbosmart recommends  
determining your current base fuel pressure with  
your existing regulator to identify a reference for the  
base pressure you set the new regulator to. This can  
be 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:  
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Mounted against chassis  
Mounted onto/near carburettor  
Mounted onto intake manifold  
CAUTION!  
Do not place the FPR near a significant heat  
source as this may lead to severe engine fires.  
CAUTION!  
Ensure to relieve fuel pressure before removing  
OEM Fuel Pressure Regulator  
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  
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TS-0402-11XX (NPT, -6 to -10 AN)  
CAUTION!  
Flare fittings CANNOT be used internally on the  
FPR. They must be ORB internally.  
Fit Gauge or Sensor Port (OPTIONAL)  
3
CAUTION!  
This step is optional. Prior to mounting the FPR,  
install 1/8” NPT gauge or sensor. Unscrew existing  
1/8” NPT blank anti-clockwise with 3/16” hex key.  
Apply thread lubricant and screw in clockwise until  
finger tight, then tighten further 1-2 turns for seal.  
Turbosmart gauge kit optional – TS-0402-2023.  
O rings are not used in the FPR Kompact (1/8”  
NPT) due to the tapered thread. A fuel safe thread  
lubricant should be used.  
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Mounting your FPR  
Start engine and check for leaks  
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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!  
Engine may run rough with incorrect base fuel  
With all fittings installed onto the FPR, the FPR can  
now be mounted. The mounting bracket is held on  
with two M5 Allen key screws. A 3mm Allen key is  
required to mount these to the back of the FPR. The  
mounting bracket is now successfully installed, and  
you can now mount your FPR in your specified  
location. Proceed to connect your fuel lines.  
pressure.  
CAUTION!  
If fuel leaks are present – switch off engine  
immediately and rectify leaks.  
See over for troubleshooting steps.  
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.  
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ADJUSTING YOUR FPR  
Remove signal reference hose and  
loosen 10mm locking nut  
CAUTION!  
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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  
Remove vacuum/pressure signal reference hose  
from nipple and loosen 10mm locking nut on top of  
FPR anti-clockwise to allow for free movement of the  
adjuster screw.  
Tighten 10mm locking nut and  
reconnect signal reference hose  
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Adjust base pressure  
Once base pressure has been successfully set,  
reconnect the signal reference hose and tighten the  
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10mm locking nut preventing the adjuster screw from  
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 3mm  
hex tool clockwise to increase fuel pressure and  
anti-clockwise to decrease fuel pressure. The  
example below is an increase in fuel base  
pressure.  
s
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TROUBLE SHOOTING  
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FPR Leaking – Check fittings are tight and O-Rings are present or not damaged.  
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FPR regulating below 3psi (20kPa) – Ensure fuel pump pressure is above 35psi with no regulator, if fuel pressure is below 35psi, the FPR  
will not regulate until inlet pressure exceeds 35psi. Possible faulty fuel pump/electrical connection.  
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FPR regulating above 20psi (138kPa) – Ensure fuel return line is not restricted causing a pressure build up for the regulator.  
FPR not holding base pressure – Check for blockages, leaks in the system and that fuel pumps are active.  
Failing the above, submit a technical request to tech@turbosmart.com.au with information of your engine, fuel type and photos of installation  
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