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If you own a 2007.5–2010 Chevy Silverado HD or GMC Sierra HD with the 6.6L LMM Duramax, chances are you've already dealt with at least one emission system headache: a clogged DPF, a cracked EGR cooler, or that gut-punch moment when your truck drops into reduced engine power mode with a load on the trailer. This guide breaks down everything you need to know before buying an LMM Duramax delete kit: what's in the box, what hardware fits, how the tune works, and what kind of real-world performance gains you can expect.

If you own a Ram 2500 or 3500 with a 6.7L Cummins, there's a good chance you've already stared at a DPF warning light, sat through a regen cycle that wouldn't end, or gotten a repair estimate that made your eyes water. The diesel particulate filter is one of the most talked-about pain points in the Cummins community, and for good reason. This guide breaks down exactly what goes wrong, how to diagnose it, and what your real options are for fixing it for good.

If you own a 2011–2016 Chevy Silverado 2500HD or GMC Sierra 2500HD/3500HD with the 6.6L Duramax LML, you already know the drill. The check engine light lives on the dash. Active regen kills your fuel economy on every long haul. And if you've hit 100,000 miles, your EGR cooler or DPF is probably already a problem, or it's about to be. The LML is one of the strongest diesel engines GM ever built. The problem isn't the engine itself. It's the emissions hardware strapped to it. This buyer's guide breaks down exactly what's in a complete LML Duramax delete kit, what fails and why, and what you need to do a clean, one-and-done delete on your truck.

If you're shopping for emissions delete parts for your Ford Super Duty, you've probably run into both terms: delete pipe and full delete kit. They sound similar, but they're very different in scope, cost, and what you actually get out of them. Buy the wrong one and you're either leaving performance on the table or wasting money on a partial fix that still throws codes and puts your truck in limp mode. This guide breaks down exactly what each option includes, what it doesn't, and how to decide which is right for your build and budget.

If you've been shopping for a used heavy-duty Chevy Silverado or GMC Sierra and landed on a 2004.5–2005 model, there's a good chance you're looking at a 6.6L LLY Duramax under the hood. Honestly, that's not a bad place to be. The LLY sits in an interesting spot in Duramax history: more accessible and serviceable than the LB7 that preceded it, but without the complex emissions burdens that started piling on with the LMM and beyond. No DPF. No DEF. No regen cycles eating your fuel mileage. Just a straightforward 6.6L diesel that, with the right upgrades and maintenance, can haul heavy and keep running well past 300,000 miles. But the LLY isn't without its quirks. This guide covers everything you need to know before buying, maintaining, or building one. We will walk from factory specs and known failure points to the smartest upgrades you can make for performance and long-term reliability.

If you own a 2011–2024 Ford Super Duty, odds are you've already had a conversation with your DPF, usually the kind that starts with a dashboard light and ends with a shop quote. The 6.7L Powerstroke is one of the strongest diesel platforms Ford has ever built, but its emissions hardware is also one of the most common reasons these trucks end up in the bay. Regen cycles that never finish, cracked filters, oil dilution, and limp mode all trace back to the same place. This guide breaks down how the DPF works on the 6.7, the failure modes owners run into most often, how to diagnose them, and the repair and upgrade paths that actually solve the problem instead of just resetting the clock.