2001-2006 Chev/GMC 2500/3500HD 6.6L Duramax Installation Instructions for system
Removal of Stock System:
1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators.
2. For 2001-2005 vehicles use a 15mm socket or wrench and disconnect the factory exhaust system at the four bolt flange located behind the catalytic converter. If the vehicle is not equipped with a catalytic converter disconnect the four bolt flange located approximately under the passenger side seat. For 2006 vehicles loosen the band clamp located behind the catalytic converter.
3. Remove the exhaust system from the rubber insulators and remove from under the vehicle. If a hoist is not available for use, it may be necessary to cut the tail pipe behind the muffler for removal of the system.
4. Unbolt the OEM hanger for the front pipe from the transmission and remove.
5. Loosen the factory band clamp and remove the stock front pipe. Some vehicles are not equipped with a catalytic converter. Do not discard the band clamp as it is required for the installation.
Installing Your Front Section of MBRPinc.
1. Install the Front Pipe onto the factory down pipe using the band clamp removed previously. Do not fully tighten to allow for adjustment.
2. Install the hanger removed previously by sliding the outside hole in the rubber insulator over the hanger on the Front Pipe and re-connect to the transmission.
3. Connect the Extension Pipe to the Front Pipe at the slip joint placing the bend
around, under the cross member. The Extension Pipe does not require cutting to fit Crew Cab trucks. For extended cab trucks, approximately 9½” needs to be cut off the end with the longest straight section of pipe.
4. Position the Extension Pipe as shown on the right and loosely install the Hanger Clamp with the shortest hanger. This will support the Extension Pipe during the installation of the rear section of the “Smokers™”
Get pdf 2001-2006 Chev/GMC 2500/3500HD 6.6L Duramax Installation Instructions for system
