Bully dog’s rule of thumb for exhaust sizes, Rapid flow installation – Bully Dog 83200 Rapid Flow User Manual
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rAPid FlOW inSTAllATiOn
rapid Flow exhaust # 83010,83200
INTRODUCTION
The Bully Dog Rapid Flow Exhaust Systems have been specially designed to allow the lowest mandrel
bends in the industry. The lower mandrel bends allow increased air flow which reduces exhaust tem-
peratures, improves engine efficiency and increases horsepower. This instruction set covers the 4” Rapid
Flow Aluminized and Ceramic Coated Exhaust for the 6.6L GM Duramax vehicles ‘01-’07.
BULLy DOg’S RULE OF ThUmB FOR ExhAUST SIzES
Note: This instruction set and the Rapid Flow Exhaust systems included are made exclusively for the
6.6L GM Duramax vehicles ’01-’07.
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