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ADJUSTABLE FUEL PRESSURE
REGULATOR |
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FUEL UPGRADE REQUIREMENT
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When the injectors and fuel pump are
upgraded to a larger flow setup the stock fuel pressure
regulator will not be enough to suit the required pressures for
the new setup. Also the stock is already preset to from factory
for the standard setup and non adjustable so it will be
restricting the tuning potential of the car. The TOMEI Fuel
Pressure Regulator will ensure stable pressures are supplied
with the oversized diaphragm. This special design has proven to
maintain the required pressure levels with any adjustments made.
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Made from billet aluminum with a hard anodized finish to cope with
the extreme conditions in the engine bay while maintaining great
looks. |
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HARD ANODIZED FINISH |
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The Hard Anodizing finish adds
more protection to the Regulator since the Regulator
will spend it’s time in a harsh environment. This finish
helps protect the thick membrane from harmful grit and
grime and with the additional resistance to corrosion
and heat and electrical insulation these aspects help
maximize its durability and safety.
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AN6 1/8×2 / #8 STRAIGHT
1/8NPT×2 FITTINGS |
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Our Regulators are supplied with 2 of each AN6 and #8
nipple connectors which are the most popular type of
fitments for fuel piping. Ready to install and use from
the box. *Depending on your setup you may require
additional equipment/parts to complete the install.
* Other piping is required and not included.
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TYPE
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REGULATORS
BODY
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SURFACE
FINISH
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WEIGHT
(With Bracket)
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DIAPHRAGM
DIAMETER
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VACUUM
HOSE NIPPLE
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FITTING
PARTS
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PRESSURE
ADJUSTABILITY
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S
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Aluminium
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Hard
Anodized
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155g
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φ33
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φ4.5
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AN6 1/8NPT x2
#8 Straight 1/8NPT x2
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2.0kgf/cm²~
8.0kgf/cm²
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L
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270g
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φ50
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KIT CONTENTS
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Fuel Pressure Regulator (x1) / AN6
1/8NPT (x2) / #8 Straight 1/8NPT (x2)
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FOR GENERAL TUNING |
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TYPE
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PART NUMBER
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MSRP
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TYPE S
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185001
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$150.00
(USD)
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FOR HIGH FLOW, BIG
POWER & HIGH BOOST |
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TYPE
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PART NUMBER
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MSRP
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TYPE L
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185002
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$195.00
(USD)
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ADJUSTABLE FUEL PRESSURE
REGULATOR |
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When the engine is
idling low the fuel flow used compared to
full power is only approx 15%. Therefore
most of the fuel that is sent by the pump
will be returned to the fuel tank. When the
engine is tuned the optimum efficiency can
be obtained with the optimum mixture of A/F
ratio. When the fuel pump is too large and
the regulator is not strong enough to handle
the excess fuel that it is receiving it will
then not be able to regulate the flow to
allow the fuel to return to the tank. This
will cause the fuel pressure to be too high
and too much fuel to be pumped into the
engine which will lead to over enrichment
and poor fuel efficiency and a variety of
problems will occur. |
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* When the fuel pressure changes from
0.5kgf/cm2 it greatly affects the
settings due to the A/F difference will
change from 0.5 or more.
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When the adjustable fuel pressure
regulator is set to optimize the
injectors the best fuel consumption and
burn ratio can be achieved.
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* Low Fuel
Pressure |
Inefficient Fuel Supply. Poor
Fuel Consumption. |
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* High
Fuel Pressure |
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Operational Problems e.g.
Solenoid Failing to Close. |
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The optimum fuel pressure is then
maintained and controlled by the change
in pressures from the intake manifold.
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The balance of
pressure inside the regulator (Pf+Pm=F/S)
maintains the fuel pressure from when
the valve opens by the pressure in the
intake manifold.
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RPM |
PRESURE |
BOOST |
DIFFERENCE |
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2500 |
3.82 |
0.70 |
3.12 |
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3000 |
4.49 |
1.42 |
3.07 |
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3500 |
4.53 |
1.47 |
3.06 |
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4000 |
4.48 |
1.47 |
3.01 |
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4500 |
4.46 |
1.45 |
3.01 |
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5000 |
4.42 |
1.44 |
2.98 |
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5500 |
4.39 |
1.41 |
2.98 |
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6000 |
4.33 |
1.38 |
2.95 |
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6500 |
4.26 |
1.30 |
2.96 |
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7000 |
4.20 |
1.25 |
2.95 |
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The TOMEI Design Maintains
Pressure,Safely and Securely.
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NO.1 |
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PART NUMBER |
MSRP |
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185106 |
$25.00
(USD)
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NISSAN |
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BNR32・34/BCNR33 |
RB26DETT |
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R32 |
RB20DET |
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R33/R34 |
RB25DET |
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(R)PS13/S14/S15 |
SR20DET |
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Z32 |
VG30DETT |
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SUBARU |
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GC8/GF8 |
EJ20G/EJ20K |
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EJ205/EJ207 |
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GDB/GDA |
EJ205/EJ207 |
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BC5/BF5 |
EJ20G |
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BD5/BG5 |
EJ20H/EJ20R |
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BE5/BH5 |
EJ206/EJ208 |
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SF5/SG9 |
EJ20G/EJ205 |
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EJ255 |
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TOYOTA |
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EP82/EP91 |
4E/FET |
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JZS147 |
2JZ-GTE |
JZA80
(Excluding ~'97 Aug VVT-i) |
2JZ-GTE |
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ＡＥ86 |
4A-GE |
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SXE10 |
3S-GE |
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NO.2 |
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PART NUMBER |
MSRP |
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185107 |
$25.00
(USD)
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TOYOTA |
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JZX90 |
1JZ-GTE |
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JZX100 |
1JZ-GTE |
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JZX110 |
1JZ-GTE |
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ST205 |
3S-GE |
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SW20 |
3S-GE |
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NO.3 |
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PART NUMBER |
MSRP |
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185108 |
$25.00
(USD)
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MITSUBISHI |
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EC5W |
6A13 |
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CD9A/CN9A |
4G63 |
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CP9A/CT9A |
4G63 |
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Z16A |
6G72 |
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NO.4 |
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PART NUMBER |
MSRP |
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185109 |
$25.00
(USD)
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HONDA |
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EF3/EF9 |
B16A |
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EG6/EG9 |
B16A |
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EK4/EK9 |
B16B |
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EG2/EF8 |
B16A |
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DC2 |
B18C |
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DC5 |
K20A |
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AP1 |
F20C |
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NA1 |
C30A |
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NA2 |
C32B |
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AN6 1/8NPT |
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PART NUMBER |
MSRP |
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185105 |
$10.00
(USD)
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#8 STRAIGHT
1/8NPT |
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PART NUMBER |
MSRP |
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185103 |
$10.00
(USD)
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#8 ELBOW
1/8NPT |
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PART NUMBER |
MSRP |
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185104 |
$20.00
(USD)
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