B&M 46054 FUEL PRESSURE GAUGE User Manual

Fuel pressure gauge set, Installation instructions

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P2 = New Fuel Pressure (psi)

P2 = P1 x

Example:
You've added a high flow exhaust
that increases airflow 10%. What
pressure should the system be set
to?

F1 = 270 cc/min
F2 = 297 cc/min (270 + 10%)
P1 = 43 psi

P2 = 43 psi x
or
P2 = 52 psi

INTRODUCTION

The B&M Fuel Pressure Gauge
Set requires the user to assemble
the gauge to the banjo bolt (and 90°
fitting depending on application).
Since the gauge and fitting are con-
nected with a 1/8" NPT (National Pipe
Thread), please use a pipe sealer
such as Teflon® to avoid possible
fuel leaks. The connection between

9500666-04

Printed in the U.S.A.

Installation Instructions

Fuel Pressure Gauge Set

Honda Civic/CRX/del Sol

Acura Integra/NSX - Eagle Talon

Mitsubishi Eclipse - Plymouth Laser

Part Number 46054

©2000 by B&M Racing and Performance Products

The B&M Fuel Pressure Gauge Set
has been designed to work on all late
model Honda Civics/CRX's/del Sols,
Acura Integras/NSX's, Mitsubishi
Eclipses, Eagle Talons & Plymouth
Lasers.
The B&M Fuel Pressure Gauge Set
allows the user to accurately measure
fuel pressure. When used in conjuction
with the B&M CommandFlo Fuel
Flow Modifier, the user may
accurately adjust fuel pressure to
compensate for engine modifications.
Most factory computers will
compensate for minor airflow
modifications (low restriction intake
and exhaust) at part throttle operations
but have no way to adjust at WOT
(Wide Open Throttle). The results are
a lean mixture right where you need
more fuel! One way to correct this is
to adjust fuel flow via fuel pressure.
Most people don't understand that by
increasing fuel pressure (on a fuel
injection system), fuel flow increases.
The formula for calculating flow
increase based on fuel pressure is:
F1 = Injector Flow (cc/min)
P1 = Current Fuel Pressure (psi)
F2 = New Injector Flow (cc/min)

the fitting and the fuel line requires no
sealer since they employ washers.

INSTALLATION

The fuel pressure tap on the late
model Honda Civic/CRX/del Sol,
Acura Integra/NSX, Mitsubishi
Eclipse, Eagle Talon & Plymouth
Laser is located on top of the fuel
filter which is mounted on the pas-
senger side firewall (driver's side
for the NSX). We suggest the ve-
hicle be allowed to cool for a while
before you begin since you will be
working around the fuel system.

CAUTION: THE FUEL SYSTEM
CONTAINS FUEL UNDER HIGH
PRESSURE EVEN WHEN THE
ENGINE IS NOT RUNNING. BE-
FORE DISCONNECTING A FUEL
LINE, WRAP THE FITTING WITH
A R A G T O P R E V E N T F U E L
SPRAY.

Remove the fuel pump fuse from
the fusebox. Try starting the ve-
hicle several times until it will not
remain running. This will help re-
lieve pressure in the fuel system

F2
F1

2

( )

297
270

2

( )

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