TruckTok 2007.5-2010 6.6L Duramax LMM 4"/5" Dp-back DPF pipe & EGR delete kit

FITMENT

• Fit 2007.5-2010 6.6L Chevrolet Silverado GMC Sierra Duramax LMM 2500/3500 HD pickup trucks.
• Will not fit Cab & Chassis trucks.

DESCRIPTION

Product Overview

• The factory 6.6L Duramax LMM engines introduces heavy exhaust backpressure, extreme thermal stress, and internal intake contamination. The stock DPF and catalytic converter choke exhaust gas velocity while triggering fuel-draining active regenerations;
• The factory EGR cooler feeds hot exhaust soot back into the intake; and the OEM Up Pipe features restrictive flattened bends that trap heat near the engine block. Furthermore, the CCV system vents oily blow-by vapor into the turbo inlet, mixing with EGR soot to form a dense, sticky carbon sludge that chokes airflow and degrades intercooler boots.

Key Features

• Heavy-Duty Construction: Features mandrel-bent steel exhaust piping, high-strength stainless up-pipes, and CNC-machined billet aluminum plates for maximum long-term durability.
• Drastic EGT Drop & Ends DPF Regens: Bypasses restrictive emissions canisters and cramped OEM exhaust piping to eliminate active regenerations and significantly reduce EGTs under load.
• Enhanced Exhaust Velocity: Upgrading to a high-flow Up Pipe eliminates manifold bottlenecks directly off the turbo, delivering noticeably faster throttle response and smoother turbo spool.
• Dual Airway Cleanliness (CCV + EGR): Prevents oily blow-by vapor and abrasive exhaust soot from mixing inside the intake manifold, preserving engine efficiency and eliminating internal coolant loss risks.

FAQ

Q: Why upgrade the exhaust system on the LMM Duramax?

A: The factory DPF system restricts exhaust flow. A larger downpipe-back exhaust provides a smoother exhaust path, helping reduce restriction and improve overall airflow efficiency.

Q: How does combining the CCV and EGR delete keep my LMM intake clean?

A: On a stock 6.6L LMM, CCV oil vapor mixes with dry EGR soot to form a thick, sticky sludge inside the intake manifold. Installing both components completely clears the intake pathway, keeping your turbo blades, intercooler boots, and intake valves dry, cool, and efficient.

Q: What is the benefit of adding the High-Flow Up Pipe to this kit?

A: The stock LMM up pipe has pinched sections that restrict exhaust flow. Replacing it with a high-flow stainless steel Up Pipe increases exhaust velocity into the turbo, delivering faster boost recovery and lower valve backpressure.

Q: What is the advantage of buying this complete package?

A: This kit combines exhaust, intake protection, and reliability upgrades into one package, making it easier to select compatible components instead of purchasing each part separately.

Q: What is the difference between the 4" and 5" exhaust options?

A: The 4" system provides a balanced combination of airflow, towing capability, and daily driving comfort. The 5" system offers greater exhaust capacity and a deeper, more aggressive diesel exhaust tone.