Bully Dog Rapid Flow Induction (RFI) Cold Air Intake User Manual
INSTALLATION MANUAL
RFI COLD AIR INTAKE
Applications RFI Part Number
GM Duramax 6.6L LML
Stage 2 RFI ‘13-‘15
Not legal for sale or use in California on pollution-controlled vehicles.
53108
RFI COLD AIR INTAKE RFI COLD AIR INTAKE
Introduction
This manual provides step-by-step installation instructions for
the Bully Dog Rapid Flow Induction (RFI) Cold Air Intake for
the GM Duramax Diesel 6.6L LML ’15+ engines. Installation
requires a few basic tools and takes about 20 minutes.
Table of Contents
Parts and Tools .......................1-4
Installation ...........................4-14
Maintenance .........................14-16
Parts Included
RFI Enclosure Lid .................... (53102-1)
RFI Enclosure Base ................... (53102-2)
Air Intake Tube with MAF Mount ......... (53103-3)
Stage 2 Air Intake Tube ................ (53108-3)
Silicone Coupler – Straight ............. (53104-11)
Silicone Coupler – Hump .............. (53104-12)
5” Worm Drive Band Clamps (2) ......... (51104-7)
5.5” Worm Drive Band Clamps (2) ....... (52102-94)
Air Filter with Band Clamp ............. (224800)
Black Oxide Phillips Screws 1/2” (2) ...... (51103-94)
Black Oxide Phillips Screws 3/8” (2) ...... (54100-94)
T20 Security Torx® Bit ................ (229120)
Nylon Washers (6) .................... (51201-94)
MAF Replacement O-ring .............. (53103-94)
M6 Flanged Bolts (3) .................. (53254-98)
Tools Needed
• Flat-head screwdriver
• Phillips screwdriver
• Bit driver
• 10 mm socket and wrench
Parts Description
RFI Enclosure Lid
The easy-to-remove lid
allows for hassle-free lter
maintenance. Heavy duty
latches ensure that the lid
creates a good seal with the
enclosure base and that the
latches close securely.
RFI Enclosure Base
There are four enclosure
features to note to ensure a
smooth installation: (1) the
foam secured to the inlet of
the box which allows it to
seal tightly to the side of the
truck, (2) the round hole on
the bottom of the box which
allows for drainage and even more cool airow from the wheel
well, (3) the mounting pegs that are located on the bottom of the
enclosure and used to secure the enclosure base to the OEM
mounting plate in the engine bay, and (4) the circular hole on the
back of the enclosure where the intake tube will be attached.
Air Intake Tube with MAF Mount
The air intake tube comes
with a precision-made
mass air ow sensor mount
with inset screw mounts.
The tube is designed with
a snap-t feature that will
secure it to the RFI base.
1 2
RFI COLD AIR INTAKE RFI COLD AIR INTAKE
Stage 2 Air Intake Tube
Designed to t in your
engine bay, the stage 2 air
intake tube improves air ow
into the turbo through the
smoothest curves possible
to prevent any loss of power
and provide sleek style
under the hood.
Silicone Coupler
These high quality 3-ply
couplers are durable, exible
and strong.
Band Clamps
Adjustable clamps connect
and hold all tubing in place.
Black Oxide Pan Head
Screws
Bully Dog provides screws
to secure the MAF sensor to
the air intake tube.
T20 Security Torx® Bit
The mass air ow sensor is
attached to the stock intake
tube using tamper resistant
pin-in-Torx® screws. Bully
Dog includes a Torx® bit for
convenience. If the bit is lost it can be purchased at any auto
parts store.
Nylon Washer
These nylon washers protect
the mass airow sensor and
prevent it from being bent
when it is attached to the air
intake tube.
MAF Replacement O-Ring
Meant to replace the
Air Filter & Band Clamp
The Rapid Flow Induction
Cold Air Intake system
includes an ISO 5011
certied eight-layer oil lter.
The air lter is housed within
the intake enclosure and
secured onto the end of
the air intake tube using the
included lter clamp and a at-head screwdriver.
3 4
orange O-Ring beneath the
stock MAF sensor, this ring
ensures a tight seal between
the MAF sensor and the
Bully Dog intake tube.
RFI COLD AIR INTAKE RFI COLD AIR INTAKE
2. Release the locking tab and unplug mass air ow sensor.
Installation
Installation is very simple, and
can be separated into three
parts: Removing the Stock
Intake, Preparing the Bully
Dog RFI Intake and Installing
the Bully Dog RFI Intake. The
complete installation of the
RFI Cold Air Intake system
should take about 20 minutes.
The assembly diagram below
shows how the parts of the
intake t together in sequence.
Removing the Stock Intake
1. IMPORTANT
3. Release the locking tab and unplug temperature sensor
which is located on the backside of the box.
Before beginning installation,
disconnect your battery at the
negative terminal. Failure to
disconnect the battery could
result in personal injury and/or
damage to your vehicle.
5 6
4. Use a at-head screwdriver to loosen the band clamps
located at each end of the stock intake tube. You do not
need to completely disconnect the clamps, just loosen them
enough to remove the tube.
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