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WARPSPEED
PERFORMANCE
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| 4" AND 5" MANDREL BENT DIESEL EXHAUST SYSTEMS CHEVROLET GM GMC 6.5L 6.6L | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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TOLL FREE IN USA AND CANADA 866-801-9338 OUTSIDE USA 479-246-9400
2004.5 - 2006 LLY MAY REQUIRE UNHOOKING THE EGR VALVE TO ELIMINATE CODE ERRORS CAUSED BY ELIMINATING THE CATALYTIC CONVERTER. The 1993-2000 6.5L GM, GMC AND CHEVROLET SUBURBAN has a 3" downpipe. The 1993-2000 6.5L have a 3" downpipe. These kits fit the 1994 to 2000 GMC, GM, CHEVROLET 6.5L equipped 1/2, 3/4 and 1 ton trucks. Actual system may vary slightly from our ad photo but as long as we have the year of your truck you will get the correct system. The benefits of our 4"system:
The kit includes the following:
Why buy from WarpSpeed Performance?
WarpSpeed Performance If you are missing parts or need technical assistance call toll free 866-801-9338 9-5pm M-F CST or email sales@warpspeedperformance.comINSTALLATION INSTRUCTIONS 2001-2005 CHEVROLET GM DURAMAX AND LLY Lay out all the parts and make sure you have everything you need for the install. Removal of stock system: #1. Start by spraying WD40 or a spray lube on the turbo clamp tee bolt, it is on the back side towards the firewall. #2. Use something like white lithium grease to spray on the rubber grommets which your stock exhaust is attached to, it will help them slip off a little easier. #3. Cut the stock exhaust in front of the transmission support (NOT REQ’D ON 04-05 LLY, THE DP CAN BE REMOVED IN ONE SECTION WITH CAT) and behind the muffler. Use a flathead screwdriver to pry the hangers loose from the rubber hanger grommets. Some of the hangers have a heat shield which we also remove. #4. Remove the turbo clamp, use an 11mm deep well socket on a ¼” or 3/8” drive ratchet. Pry the clamp loose with a large flat head screwdriver. HELPFUL HINTS: #1. When you slip one section of tubing into another make a vertical mark with a sharpie at the joint, as well make a horizontal mark about 1-½” long away from the joint. This will help you tell if the tubing has moved when you are adjusting. #2. When you install the clamps try to get them close to the edge of the joint, when you are installing the clamps at a joint put them on behind the expansion then gently tap them over the expanded end with a mallet. Installation: #1. Slide the turbo downpipe up from the underside of the vehicle, hold it in place and slip the turbo band clamp back over the flanges. Loosely attach the turbo clamp enough to just hold it in place. #2. Install the second section of tubing to the outlet of the downpipe, slip the hanger into the grommet at the transmission support and loosely tighten clamp (IF IT IS NOT ALREADY WELDED IN PLACE). #3. Install hangers for muffler (IF THEY ARE NOT ALREADY WELDED TO MUFFLER), glass pack or muffler eliminator and then drop the muffler in place. #4. Position front half of tailpipe into outlet end of muffler, check to make sure it is centered over the rear axle. On some models you may trim 4” or so off inlet end to give maximum clearance but measure and check clearance twice and cut once. #5. Install tailpipe hanger (IF IT IS NOT ALREADY WELDED IN PLACE) and rear half of tailpipe, if you bought a tip slip it over outlet end of tailpipe and mark it in case you need to trim it a little. Then simply tighten the bolt on tip or for the weld on type, weld it on. #6. Measure the last section of tubing which will go into the muffler inlet and trim to length (IF NEEDED), we furnish enough tubing to handle all cab styles and bed lengths. #7. When the system is all together starting from the downpipe outlet start tightening the clamps and move towards the rear of vehicle. Make sure you have enough clearances at supports, rear shock and spare tire. Lastly tighten the turbo clamp. If you have an LLY you may get a code error, if you do you will need TO DISCONNECT THE EGR VALVE. IT HAPPENS VERY SELDOM SO IT MAY NOT CAUSE A CODE ERROR ON YOUR TRUCK. We seldom if ever weld the complete system, at most a couple of tack welds at each joint should suffice. If you are missing parts or need technical assistance call toll free 866-801-9338 9-5pm M-F CST or email sales@warpspeedperformance.com
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