Bully Dog 82021 Rapid Flow - Manual (Page 3)

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rAPid FlOW inSTAllATiOn
rapid Flow exhaust # 82021
note: this instruction set and the rapid Flow Exhaust system included is made exclusively for the 5.9L Cummins
‘03-’04. In 2004 Dodge introduced a new engine half way through the model year. these instructions cover the
early 2004 models without the catalytic converter.
INTRODUCTION
The Bully Dog Rapid Flow Exhaust Systems have been specially designed to allow the low-
est mandrel bends in the industry. The lower mandrel bends allow increased air flow which re-
duces exhaust temperatures, improves engine efficiency and increases horsepower. This instruc-
tion set covers the 5” Rapid Flow Aluminized Exhaust designed specifically for the 5.9L Cummins.
BULLy DOg’S RULE OF ThUmB FOR ExhAUST SIzES
300 HP
400 HP
500 HP
600 HP
4” Exhaust
Systems for
HP Applications
Less Than
450hp
5” Exhaust
Systems for
HP Applications
Between 450hp
and 550hp
6” Exhaust Systems
for HP Applications
over 550hp
4”
Ceramic-Coated
Exhaust System
for all HP
Applications