Seguler 4"/5" DPF Delete Dp-back & EGR delete kit for 2007.5-2010 6.6L Duramax LMM

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

• Excessive exhaust restriction, trapped underhood heat, and sticky intake sludge limit the power and durability of 2007.5–2010 LMM Duramax trucks. The stock DPF system burns extra fuel during frequent regens, cramped up-pipes restrict turbo drive pressure, and oily blow-by mist combines with dry exhaust soot to choke off fresh intake airflow.
  
• Overhaul your truck’s breathing and thermal management with this comprehensive LMM Flow & Protection Package. Engineered to bypass restrictive emissions hardware, smooth out up-pipe exhaust pathways, and route oil vapors away from your intake, it eliminates power-robbing carbon buildup, lowers operating EGTs, and delivers maximum airflow reliability under heavy towing conditions.
  

Key Features

• Built from mandrel-bent steel piping, high-strength stainless up-pipes, and CNC billet plates for serious long-term durability.
  
• Ends DPF regens and drops EGTs by bypassing the emissions canisters and cramped OEM exhaust routing.
  
• Speeds exhaust velocity with a high-flow up-pipe that removes manifold bottlenecks for faster throttle and smoother spool.
  
• Keeps the intake clean by stopping oily blow-by and abrasive soot from mixing inside the manifold.

FAQ

Q: Why upgrade the exhaust on an LMM Duramax? 

A: The factory DPF throttles exhaust flow. A larger downpipe-back exhaust smooths the path, cutting restriction and improving overall airflow.

Q: How does the CCV + EGR combo keep the intake clean? 

A: On a stock LMM, CCV oil vapor mixes with dry EGR soot into thick sludge. Installing both clears the intake path, keeping the turbo blades, intercooler boots, and valves dry and efficient.

Q: What does the high-flow up-pipe add? 

A: The stock LMM up-pipe has pinched sections that restrict flow. A high-flow stainless pipe raises exhaust velocity into the turbo for faster boost recovery and lower valve backpressure.

Q: What’s the difference between the 4" and 5" exhaust choices? 

A: The 4" system balances airflow, towing ability, and daily comfort. The 5" system offers more exhaust capacity and a deeper, more aggressive diesel tone.