！Before installation, confirm that：
This high-performance component does not comply with the laws and regulations for highway driving and cannot be used on any vehicle that has been registered or certified for use on highways. This means that the component may only be suitable for racing cars or other off-road vehicles. If it is installed on vehicles driving on the highway, legal issues will be borne by oneself.
This is the installation process for the 2001-2007 6.6L GM Duramax LB7 LLY LBZ DP-0304: 4" Downpipe Back DPF Delete Pipe and DP-0305: 5" Downpipe Back DPF Delete Pipe, for your reference during the installation process.
Step 1:
Remove all sensors from the exhaust pipe, loosen the flange that secures the drain pipe and DPF/exhaust pipe assembly.
。
Step 2:
Remove all factory plugs and ventilation holes from the diesel particulate filter, tie them to the truck frame or remove them from the clamp connection. Spray the hanger with WD-40, then pry off the hanger from the rubber bracket and remove the DPF from the truck.
Step 3:
1.Release the exhaust fixture that secures the OEM turbine straight pipe and downspout, and then remove it. Remember to keep the fixture for future use.
2.To facilitate the disassembly of the downpipe, remove the hanger attached to the gearbox and cut off the pipe inlet.
Step 4:
Install the drain pipe using the original fixture and connect the drain pipe flange. Press the
downward flange to secure the pipeline, but the pipeline can still move.
Step 5:
Install pipe #2 Connect one end of the sloping surface to the tail end of the # 1 downpipe and tighten it loosely with a fixture.
Connect the U-shaped tube of the pipe #3 to the end of the pipe #2 , and loosely clamp it with a fixture.
Step 6:
Install the muffler replacement pipe #4 in front of the #6 axle pipe and the #7 tailpipe, and select the appropriate extension pipe #5 according to the wheelbase. Cut the extension pipe according to the needs of the vehicle body.
Step 7:
Starting from pipe #1, tighten the vortex belt clamp and continue tightening until the rear connection, checking the gap while tightening.
Related installation manual：
This high-performance component does not comply with the laws and regulations for highway driving and cannot be used on any vehicle that has been registered or certified for use on highways. This means that the component may only be suitable for racing cars or other off-road vehicles. If it is installed on vehicles driving on the highway, legal issues will be borne by oneself.
This is the installation process for the 2001-2007 6.6L GM Duramax LB7 LLY LBZ DP-0304: 4" Downpipe Back DPF Delete Pipe and DP-0305: 5" Downpipe Back DPF Delete Pipe, for your reference during the installation process.
Remove all sensors from the exhaust pipe, loosen the flange that secures the drain pipe and DPF/exhaust pipe assembly.
Remove all factory plugs and ventilation holes from the diesel particulate filter, tie them to the truck frame or remove them from the clamp connection. Spray the hanger with WD-40, then pry off the hanger from the rubber bracket and remove the DPF from the truck.
1.Release the exhaust fixture that secures the OEM turbine straight pipe and downspout, and then remove it. Remember to keep the fixture for future use.
2.To facilitate the disassembly of the downpipe, remove the hanger attached to the gearbox and cut off the pipe inlet.
Install the drain pipe using the original fixture and connect the drain pipe flange. Press the
downward flange to secure the pipeline, but the pipeline can still move.
Install pipe #2 Connect one end of the sloping surface to the tail end of the # 1 downpipe and tighten it loosely with a fixture.
Connect the U-shaped tube of the pipe #3 to the end of the pipe #2 , and loosely clamp it with a fixture.
Install the muffler replacement pipe #4 in front of the #6 axle pipe and the #7 tailpipe, and select the appropriate extension pipe #5 according to the wheelbase. Cut the extension pipe according to the needs of the vehicle body.
Starting from pipe #1, tighten the vortex belt clamp and continue tightening until the rear connection, checking the gap while tightening.
Related installation manual：
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2004-2005 6.6L Chevy GMC Silverado LLY Duramax Diesel EGR Delete Kit
2006-2007 6.6L Chevy Silverado Classic GMC Duramax LBZ Diesel EGR Delete Kit
2004-2010 6.6L GMC Chevrolet Duramax CCV PCV Reroute Ventilation diesel Kit
2001-2016 6.6L Chevrolet Chevy GMC Duramax LB7 LLY LBZ LMM LML Exhaust Up-Pipe(Passenger Side)
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2004.5-2010 LLY LBZ LMM 6.6L Duramax Diesel 3" Downpipe Exhaust
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