Suspension & Steering
Engine & Performance
Wheels & Tires
GM Duramax LML
Since the initial release of the Duramax equipped heavy duty GM’s back in 2001, they have had to perform minimal changes to this engine in order to keep up with the competition and in order to comply with ever changing emissions standards. The truck is still a 6.6L, common rail fuel system, Allison transmission backed work horse. Is this a bad thing? Not at all! And as with all vehicles, there is always room for improvement that can be tailored to the specific uses of the truck.
One thing is for certain, the LML Duramax is the most technologically advanced Duramax to date. What does this mean? For those looking to add power, its almost too easy. The right combination of tuning, exhaust, and intake, these trucks will absolutely scream, yet still be incredibly efficient and dependable. We also offer numerous suspension options to increase the towing capacity, drastically enhance the ride quality, both on and offroad, and bring the truck to new heights…..LITERALLY!
All of these choices can be overwhelming, if you need help give us a call and we will be more than happy to answer your questions.
Q: I have an EFILive AutoCal for my earlier Duramax. Can that same tuner work on my LML Duramax?
A: In short, yes!(Except L5P's) Autocals get linked to the tuners computer so if you are not getting the same company's tunes, you must get it unlocked first by the original tuner so it can be locked to the new tuner. After that, a new VIN license must be purchased to open up a slot on the tuner. And tunes must be purchased for the new vehicle. They would be sent to your e-mail along with instructions to load them onto the tuner.
Q: Will a DPF (Diesel Particulate Filter) back system provide more sound to my truck?
A: Generally speaking no, the emissions equipment upstream will still act as a muffler. However, that doesn't mean installation will not help in other areas by improving exhaust flow. While minor, the benefits are noticeable, plus an aftermarket exhaust looks way better than the stock exhaust.
Q: I'm looking at an exhaust kit on your website, but it doesn't state which cab and bed configuration it fits, will this fit my application? A: In most cases, unless it is specifically stated as fitting a certain configuration, all exhaust kits on our website will fit all cab and bed lengths. Further, most kits will not fit cab and chassis applications unless otherwise noted.
Q: I'm looking at this 5" (or other) exhaust kit, but my truck only has a 4" exhaust now. Does this 5" exhaust include an adapter / reducer?
A: Yes, the exhaust systems we sell will adapt down to fit the application at the designated starting point (turbo back, cat back, DPF back, etc.) for a hassle free installation.
Q: What are EGT's?
A: EGT stands for Exhaust Gas Temperature, which is the temperature of the exhaust leaving your engine. This measurement is typically measured before the turbo to ensure you are not overheating components. For most applications, we recommend not exceeding 1300 degrees.
Q: Will the products you offer void my warranty?
A: Some parts may void your warranty and some may not. We recommend researching the Magnuson-Moss Warranty Act that specifically protects consumers when choosing to install aftermarket components on their vehicles, as well as consulting with your local dealer.
Q: Do you offer smoke and lope tunes with any of your preloaded EFILive AutoCal options?
A: No we do not. In short, both smoke and lope tunes create these results at the expense of the overall reliability of your engine. The tuning companies we have chosen to partner with are top notch and are most intested in creating increased power, fuel economy, and overall drivability. We at Diesel Power Products invest a substantial amount of time and effort to ensure that the products we recommend are in the best overall interests of our customers and their trucks, and unfortunately, these types of tunes do not align with that overall goal.
If you've got a question about your Duramax, feel free to give us a call at 888-99-DIESEL and we would be happy to assist.