Huckstorf Diesel Pump & Injector Service is your one stop shop for all your diesel repairs, maintenance, and upgrades! Please contact us if you have questions or would like suggestions.
Diesel Performance Product Guide & Store
There are many diesel performance parts and products out there. Which one is right for you? Huckstorf Diesel has spent lots of time doing the research and testing many products so you don't have to. From diesel performance chips, to tuners, to modules, to intake systems, and exhaust systems we know what works and we will be happy to sort out your options. We took the time to break it down for you into sections and give you options and suggestions in each of those sections. In the Performance area there are truck specific products that make the power. The Exhaust area has complete systems or individual parts so you can build your own custom exhaust or stack kit. We offer a wide variety of Gauges & Holders to monitor what is going on with your truck. The Air Intake System section is also broken down by truck brand so you can easily find the right one. In the Turbocharger section you will find stock replacements and performance upgrades for the serious tower and the high performance crowd. With big power you need a reliable and capable Fuel Supply. In the Engine Parts area you will find the commonly replaced items that you are looking for. And of course, every diesel engine needs quality fuel. In the Additives area you will find the best products available to treat your fuel to keep your engine happy!
Please look around and Contact Us if you have any questions, comments, or suggestions. Thank you!
2006-2007 LLY / LBZ Duramax Exhaust Systems
In 2006 a catalytic converter was kept in the Duramax exhaust systems, but the flange style was changed on the outlet. It is installed in the front pipe which starts at the bottom of the firewall and ends in an overlapping flange. The systems listed on this page start from the overlapping flange after the converter and keep all of the emission equipment in place.
The truck chassis did not change significantly from 2001 through the current model LMM trucks. The LB7 exhaust is a popular swap into newer model trucks used in "Off Road" and "Competition Use" to eliminate the emissions equipment for the benefits of a freer flowing exhaust system.
These kits are built to fit a variety of cab configurations. On shorter wheel base models you may have some sections of pipe left over.

Engineered for optimal performance and a perfect fit, Silverline Exhaust systems are developed using the latest technology and undergo extensive fitment testing. Using precise measurements, the mandrel bent tubing improves airflow for enhanced horsepower and lower exhaust temperatures. These systems include pre-welded hangers and hardware for an easy installation. Each Silverline system is supplied with a highly polished 5" premium dual wall straight edge tip. Because of its multiple layers, it will not discolor from extreme heat. The bolt-on design offers the ability to place the tip at your preferred length. For the diesel owner who only wants the best, top of the line T304 stainless steel offers superior resistance to corrosion, is able to withstand high levels of heat, and can be polished to a mirror bright finish. The value-priced 409 grade stainless series is the same type of steel used in many original equipment exhaust systems. The performance is the same, but it will discolor over time. The Silverline diesel muffler is the key to the aggressive sound associated with these exhaust systems. With a free-flow design, the strategically placed louvers provide sound deadening for a more pleasant in-cab ride while still providing the powerful sound of the diesel engine during acceleration.

Diamond Eye Performance has developed a Turbo Direct exhaust pipe, also known as a down pipe, for the late 2004 to early 2007 GM Duramax LLY & LBZ engines. This is the pipe that connects directly to the turbo and runs down to the passenger side floor board. The factory pipe is made for extra clearance between the engine and the firewall. It is good for clearance, but bad for flow. The Diamond Eye pipe features CNC machined end forms for a precise fit, mandrel bent tubing for smoother flow, and is covered with special thermal resistant wrapping to help reduce your EGT's by up to 150 degrees.
Buy Diamond Eye Down Pipe Now!
We were curious to see what difference these actually made, so we did a before and after test. What we found was not a big difference in power, but a substantial difference in exhaust gas temperatures. The power increased by 11.3 HP and the torque was increased by 23.5 foot pounds. The real difference was in the 206 degree EGT reduction! Our recommendation would be to definitely consider this as a needed upgrade for high performance trucks and those that do a lot of heavy hauling. This should be done after or at the same time the rest of the exhaust is upgraded.


Huckstorf Diesel Online Store
Click on the "Buy" button to add that product to the shopping cart, or you can click on the picture for further product information. The Check Out link will appear on the top left side of the page after you add something to your cart. You can always give us a call at 800-776-7102 during business hours for personal assistance. Thank you!