Unleash Your 6.6L Duramax. Total emissions removal for maximum diesel performance.
If you drive a 2017 or newer Chevrolet Silverado HD or GMC Sierra HD, you already know that the 6.6L L5P Duramax is one of the most capable and formidable diesel engines ever engineered by General Motors. Straight from the factory, it boasts massive horsepower and torque figures. However, there is a dark cloud hanging over this incredible platform: the incredibly restrictive, prone-to-failure factory emissions systems.
At Delete.Autos, we understand the frustration of heavy-duty truck owners. You bought a diesel to work hard, tow heavy, and run forever. Instead, you are forced to deal with clogged Diesel Particulate Filters (DPF), failing Diesel Exhaust Fluid (DEF) heaters, sticking Exhaust Gas Recirculation (EGR) valves, and the dreaded "Limp Mode" that leaves you stranded on the side of the highway with a 15,000-pound trailer hooked to your tailgate.
The solution to reclaiming your truck's reliability, power, and fuel efficiency is installing a comprehensive l5p delete kit.
The modern emissions equipment on the 2017-2019 L5P Duramax acts like a severe bottleneck on your engine's performance. The EGR system pumps hot, soot-filled exhaust gas back into your intake manifold, creating a thick, black sludge that coats your engine's internals. Meanwhile, the DPF and SCR systems in your exhaust create immense backpressure, trapping heat against the engine and forcing it to work twice as hard to push exhaust gases out.
When you install a premium l5p delete kit from Delete.Autos, you are not just modifying your truck; you are saving its life. Here is exactly what you gain:
Deleting an L5P requires precision hardware. The 2017+ Duramax platform is highly advanced, utilizing complex CAN bus electrical networks. A top-tier l5p delete kit from Delete.Autos typically includes:
Note: Due to the high security of the GM E41 ECM (Engine Control Module) used in the L5P, you will also require a specialized ECM unlock service or swapped ECM, along with a custom delete tuner (such as EZ Lynk or HP Tuners) to rewrite the vehicle's software and prevent dashboard error codes.
Don't just take our word for it. Here is what real, hard-working American truck owners have to say after installing our hardware on their rigs:
"My 2018 Silverado 3500 was at the dealership three times in one year for DEF heater and NOx sensor failures. I was losing money every time the truck was down. I bought the full l5p delete kit from Delete.Autos, got the ECM unlocked, and tuned it. The truck hasn't skipped a beat in 40,000 miles. Tows better, runs cooler, and gets way better fuel mileage."
"I hated how quiet my L5P was. Installed the 5-inch straight pipe delete from this site and the sound is unbelievable. It sounds like a real diesel now! The throttle response is instant, and I dropped my EGTs by almost 200 degrees when pulling my toy hauler. Highly recommend this kit."
"I was hesitant about the cost of unlocking the E41 ECM, but it is 100% worth it. The hardware from Delete.Autos fit perfectly. The EGR block-off plates are super high quality, and the exhaust lined up on the factory hangers with zero issues. My MPG went from 14 to 18 on the highway."
"Nothing is worse than staring at a 'Speed limited to 55 MPH' warning on your dash when you're 500 miles from home. Doing the l5p delete kit gave me peace of mind. The CAN bus plugs provided in the kit were high quality and snapped right in to seal the factory harnesses. Flawless product."
"Ripping out the factory EGR system and all the useless cooler lines made my engine bay look so much cleaner. It's actually possible to work on the truck now. The CNC machined parts from Delete.Autos are top-notch and sealed up perfectly with no leaks."
"Paired this delete kit with a tow tune, and the low-end torque difference is night and day. The truck doesn't struggle or hunt for gears anymore on steep inclines. If you use your L5P for serious hauling, you need to let it breathe with this kit."
Yes, absolutely. The factory computer (ECM) constantly monitors the DPF, DEF, and EGR systems. If you remove the hardware without tuning the truck, it will immediately throw dozens of trouble codes and drop into a severe limp mode, limiting your speed to 5 MPH. You must use a delete-capable tuner and an unlocked ECM to overwrite the factory software.
General Motors introduced the E41 ECM with the L5P engine in 2017, which features military-grade encryption. Unlike older trucks that can be flashed through the OBDII port directly, the L5P requires the ECM to be physically removed and sent in for an "unlock" process, or you must purchase a pre-unlocked exchange ECM before you can load delete tunes onto it.
Yes. Removing factory emissions equipment and altering the vehicle's software will void your powertrain warranty with General Motors. Most owners wait until their factory warranty has expired, or they choose to delete early because the long-term reliability benefits heavily outweigh the value of the dealership warranty.
Important Legal Notice: All delete kits, exhaust pipes, and EGR removal components sold by Delete.Autos are strictly manufactured and sold for off-road, closed-course competition use only. Removing emissions equipment on a vehicle driven on public streets, roads, or highways is a violation of federal law (the Clean Air Act). Buyers are responsible for ensuring their vehicle is used in compliance with all local, state, and federal regulations.
Your 6.6L L5P Duramax was built to conquer mountains, haul heavy equipment, and outlast the competition. Stop letting restrictive factory emissions equipment hold it back and threaten its lifespan. Upgrade to a premium l5p delete kit from Delete.Autos today to experience the true, unbridled power of your heavy-duty truck. Shop our selection of precision-engineered hardware now and join the thousands of satisfied drivers who have taken their reliability into their own hands.