AEM 25-108BK High Volume Fuel Rail Installation Instructions

HI-FLOW

FUEL RAIL

Installation Instructions for:

Part Number 25-108

88-91 Civic/CRX SI

92-95 Civic

ADVANCED ENGINE MANAGEMENT INC.

2205 126

Phone: [phone] Fax: [phone]

88-95 Honda Multi-Port Fuel Injected D-Series Hi-Flow Fuel Rail

Some applications are legal in California for racing vehicles which may never be used on public highways

TH

Street, Unit A Hawthorne, CA. 90250

www.aempower.com

Instructions Part Number: 10-315

© Copyright 2001

Congratulations! You have just purchased the finest Hi-Flow Fuel Rail for your car at
any price! The AEM Hi-Flow Fuel Rail is the result of extensive development on a wide
variety of cars. It is the most advanced Hi-Flow Fuel Rail on the market and is
specifically engineered for its application. All AEM Hi-Flow Fuel Rails are CNC
machined from 6061 T-6 billet aluminum and feature a ½-inch bore capable of flowing
enough fuel to support most high-performance engines. This larger bore also dampens
the back pulse created by oversized injectors on high-output applications. The AEM
Fuel Rail also works perfectly with stock injectors. Each Fuel Rail includes an additional
port for the installation of a nitrous system or an external fuel pressure gauge. The ends
of the rail are tapped to accept either –6 or –8 line and a custom fitting that allows for
the use of the stock fuel hose. AEM’s Hi-Flow Fuel Rail Kit includes everything needed
for a professional bolt-in installation.

Bill of Materials for: 25-108

QTY. Part Number Description

1 2-5008 D-Series Fuel Rail
2 2-125 D-Series Fuel Rail Spacer
1 2-602 Honda Fuel Fitting w/o Hole
1 2-603 Honda Fuel Fitting w/ Hole
1 2-604 -6 Fuel Rail Plug
2 1-121 1/8” Pipe Plug
2 1-3007 -6 Crush Washer
4 1-3008 Fuel Injector O-Ring
2 10-922S AEM Silver Decal
1 10-315 Instructions

Read and understand these instructions BEFORE attempting to install
this product.

Note: This fuel rail kit requires the removal and reinstallation of fuel system related components.

If you are not familiar with the installation and/or the operation of these components then please
refer this installation to a qualified professional.

WARNING!

• Do not smoke while working on the fuel system.

• Keep open flames and/or sparks away from your work area.

• Be sure to relieve the fuel pressure while the engine is off.

1) Getting started

a) Make sure vehicle is parked on a level surface.
b) Set parking brake.
c) Disconnect negative battery terminal.
d) If engine has run within the past two hours let it cool down.
e) Clean the area around the fuel rail so that dirt cannot get into the engine.

2) Relieving fuel pressure

a) Remove the fuel filler cap.
b) On models equipped with a 6mm service bolt: (Fig. 1)

i) Use a box end wrench on the 6mm service bolt on top of the fuel filter or fuel rail, while

holding the special banjo bolt with another wrench.
ii) Place a rag or shop towel over the 6mm service bolt.
iii) Slowly loosen the 6mm service bolt one complete turn.
iv) Leave service bolt loose until all pressure has been relieved.
v) Retighten service bolt to 10lb-ft.

Service Bolt

Fuel Filter

Shop Towel

Fig. 1