GM Products
2001-2005 6.6L LB7 Diesel Performance

Select Category Exhaust Systems, Aluminized Steel Exhaust Systems, 409 Stainless Steel Off Road EGR & Cat Elimination Kit

We carry a complete inventory of 6.2, 6.5 & 6.6 parts and accessories. Customers who purchase discounted GM parts from our online program are always assured the best value. Please call our GM experts for more information.

About 6.6 diesel performance: Talk to us! Unlike other Web store front companies, with no experience, we like to speak with you to determine what your goals are and how you can achieve them. There are great differences in products and programs to achieve different goals and we can determine your needs through what you tell us. Call us at 800-832-8844.

The 6.6 Duramax engine is the strongest high speed V8 diesel ever produced. With 48 head bolts and six bolt main bearings it’s a winner! We have extensive experience and background with performance diesel engines for increasing fuel economy, towing or high power.

Fuel Economy: There are modifications to increase fuel economy and power at the same time. Selecting the correct components is very important to achieve power and economy increases. We can put a package together for you to reach your goals at discount prices. While there are many variables to the fuel economy scenario improvements can be made.

High Power: In our drive in area we set up some Duramax trucks that turn in eleven second bracket in the quarter mile. Recently at the diesel nationals three trucks we set up won Auto Meters Quick Ten Low Elapsed Time awards plus one truck broke the current elapsed time record. At Dyno shoot outs, trucks set up by us have generated over 745 RWHP and over 1420 torque. From electronics, stacked boxes to Nitrous systems we have the products and know how to get you down the track! We program on premises and set up custom Nitrous and propane kits to match your power needs.

Towing: Towing is a world in it’s own! Most products available address power but are not specifically designed for towing. They will tell you their product will work for towing but temp’s will be high and the power band at the wrong RPM. For towing you need products that will increase torque while keeping exhaust temperatures within reason. Since torque moves weight the best scenario is to bring your power band down from 3000 RPM to 1600 RPM where you mostly drive and tow with your vehicle. Since we program on premises we can use one of our proven tow programs along with other equipment to achieve your towing goals.

• Fuel Additives

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High Flow Stainless & Aluminized Steel Exhaust Systems

About AFE Exhaust Systems: We use AFE exhaust systems with top of the line materials and engineering. Through heavy wall mandrel bent pipe into a muffler with directional flow louvers our exhaust systems increase power and economy while reducing exhaust temperatures. Installation is made simple through supplied brackets that mount to factory hangers. To finish the installation we have a 5” polished stainless steel exhaust tip. For more information please link to AFE Exhaust Systems.

• Turbo Back: Includes down pipe, system starts at the turbocharger.
• Cat Back: System starts at the exit of the Catalytic Converter.

Exhaust Systems, Aluminized Steel

2001-2005 6.6L LB7 (Turbo Back, all pick up trucks) Image may not reflect the product being sold
4” Mandrel bent, heavy wall, directional louver muffler. $350.00 Order | Checkout Part Number: 10042   Weight: 76 lbs.

2001-2005 6.6L LB7 (Cat Back, All pick up trucks w/catalytic converter) Image may not reflect the product being sold
4” Mandrel bent, heavy wall, directional louver muffler. To eliminate cat and EGR functions for off road vehicles please see our EGR/Cat elimination kit at the end of this section. $285.00 Order | Checkout Part Number: 10041   Weight: 65 lbs.

Exhaust Systems, 409 Stainless Steel

2001-2005 6.6L LB7 (Turbo Back, all pick up trucks) Image may not reflect the product being sold
4” Mandrel bent, heavy wall, directional louver muffler. $450.00 Order | Checkout Part Number: 40042   Weight: 76 lbs.

2001-2005 6.6L LB7 (Cat Back, All pick up trucks) Image may not reflect the product being sold
4” Mandrel bent, heavy wall, directional louver muffler. To eliminate cat and EGR functions for off road vehicles please see our EGR/Cat elimination kit at the end of this section. $375.00 Order | Checkout Part Number: 40041   Weight: 67 lbs.

5” Polished Stainless Steel Exhaust Tip for all 4” Exhaust Systems Image may not reflect the product being sold
4” to 5” adapter incorporated in the self clamping tip. Rolled end with 15° angle cut tip. $41.20 Order | Checkout Part Number: 90002   Weight: 5 lbs.

Off Road EGR & Cat Elimination Kit
All pick up trucks - 2004.5-2005 LLY Engines Only

Electronic module, instructions and stainless steel block off plate: Allows removal of the Catalytic converter and blocking the EGR valve function. Increases power and economy without setting trouble codes.

2004.5-2005 Catalytic Converter & EGR Valve Elimination Kit Image may not reflect the product being sold
LLY Engines only, for off road use only. $224.00 Order | Checkout Part Number: EGR   Weight: 5 lbs.

Prices subject to change without notice.
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Any questions not addressed above should be forwarded to M&S Technical Services.