Bully Dog 83040 Rapid Flow - Manual (Page 3)

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rAPid FlOW inSTAllATiOn
rapid Flow exhaust # 83040
Note: This instruction set and the Rapid Flow Exhaust systems included are made exclu-
sively for the 6.6L GM Duramax LLY & LBZ vehicles ’04.5 - ‘07 Classic.
IMPORTANT: This Rapid Flow Exhaust will not fit on Extended Cab Short Box trucks. Call Tech Sup-
port for options before you begin install.
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