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TruckTok 2011-2016 6.6L Duramax LML 4"/5" DP-Back DPF/EGR Delete kit
Brand TruckTok

TruckTok 2011-2016 6.6L Duramax LML 4"/5" DP-Back DPF/EGR Delete kit

SKU ER-0281-1
$64.49 - $873.50
$439.00
$64.49 - $873.50
$439.00

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Installation Discussion & Community Support

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FITMENT

  • 2011-2016 6.6L Silverado & Sierra Duramax 2500HD/3500HD LML engine.
  • Please physically inspect underneath your truck to verify your turbo discharge style before purchasing!

DESCRIPTION

Product Overview

  • The factory emissions setup on 6.6L Duramax LML engines creates severe exhaust backpressure, traps extreme heat, and subjects the intake tract to heavy thermal stress and contamination. The stock DPF and Cat choke exhaust gas velocity while triggering fuel-wasting active regenerations.
  • Simultaneously, the factory EGR cooler recirculates hot, abrasive exhaust soot directly into the intake manifold, baking into sticky carbon sludge and introducing risks of internal coolant leaks.

Key Features

  • Drastic EGT Drop & Ends DPF Regens: Replaces restrictive emissions canisters and cramped OEM exhaust piping to end active regenerations and significantly lower EGTs under heavy load.
  • Muffler Versatility: Choose between a straight-pipe design for maximum volume or an integrated high-flow muffler to tone down high-frequency exhaust rasp and cab drone.
  • Stops Intake Carbon Sludge & Coolant Leaks: Completely removes the factory EGR cooler, preventing carbon soot from choking intake valves and eliminating internal coolant loss risks.
  • Tailored Fitment for Transition: Specifically split into 11–15.5 and 15.5–16 options to guarantee exact hanger placement and frame clearance around updated DEF/chassis components.

FAQ

Q: Why is there a split between 2011–2015.5 and 2015.5–2016 models?

A: The LML downpipe connection changed mid-year in 2015. 2011–2015.5 trucks use a V-band clamp, while 2015.5–2016 trucks use a 3-bolt flange. Choose the correct version for truck production year.

Q: Should I choose a Race Pipe or a Full Downpipe-Back Exhaust?

A: Choose a Race Pipe for a simple, budget-friendly upgrade that replaces the restrictive DPF/CAT section while keeping your factory tailpipe. Choose a Full Downpipe-Back Exhaust (4" or 5") for maximum airflow, reduced restriction, and a deeper diesel exhaust sound.

Q: Should I select the version with or without a muffler?

A: Choose No Muffler for maximum exhaust flow and a more aggressive diesel tone. Choose With Muffler for a quieter exhaust note, reduced cab drone, and a more comfortable highway or towing experience.

Q: What is the benefit of adding an EGR delete to the exhaust upgrade?

A: The EGR delete helps prevent hot exhaust soot from entering the intake system, reducing carbon buildup and helping maintain cleaner airflow through the engine.

Q: Is custom ECM tuning required after installing this product?

A: Yes. Removing the factory DPF and EGR components changes ECM feedback signals. Proper ECM tuning (Minimaxx Tuner V2 or EZ LYNK) is required to disable DTCs, clear the CEL, and prevent limp/derate mode.

  • 5 stars: 14 (82%)
  • 4 stars: 3 (18%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
J
Jesse Colton
2013 Sierra — runs better than new

2013 GMC Sierra 2500 with 140K miles. Was dealing with constant regens and EGR soot buildup. Bought this combo kit and a tune. Whole install took a Saturday afternoon. Truck now pulls harder, runs cooler EGTs, and I'm seeing 3-4 mpg improvement on the highway. Should have done this years ago.

R
Roy Whitaker
LML owners — this fixes the CP4 issue indirectly

The biggest threat to the CP4 pump is soot-contaminated oil from the EGR system. Removing the EGR keeps your oil cleaner which means your CP4 injection pump lives longer. This kit literally pays for itself by helping prevent a $4000 injection pump failure.

N
Nate Colby
Make sure you have a tuner ready

The kit itself is 5-star quality. Just want to emphasize what others have said: you CANNOT drive the truck after installing without flashing the ECM first. It will go into limp mode immediately. Have your tuner (EFI Live, EZ Lynk, HP Tuners) ready before you turn a wrench.

O
Owen Stark
Coolant line plugs worked perfectly

The EGR delete section comes with proper plugs for the coolant lines that fed the EGR cooler. Threaded brass plugs with O-rings — not the rubber caps some kits use. Zero coolant leaks. This attention to detail in the small parts is what separates this kit from cheaper alternatives.

L
Levi Parsons
Good kit but instructions could be clearer

Everything fits great and the quality is there. Took off one star because the instructions are a single sheet with small photos. If you haven't done an EGR delete before, budget extra time for YouTube research. The DPF pipe part is simple. The EGR section takes some patience finding all the coolant lines.

D
Dan Shipley
Saved over $200 buying as a combo

Priced out DPF pipe and EGR delete separately from other brands — would have been over $400. This combo kit was way more affordable and the quality is identical to the name brands. Everything fit without modification on my 2012 Silverado 3500.

R
Reed Callahan
2015 LML with 180K — still running strong

Had this kit installed at 120K miles. Now at 180K and the truck has never run better. Oil analysis shows way less soot contamination since the EGR was removed. UOAs went from 'caution' to 'normal.' If you plan to keep your LML long term, this is maintenance, not just performance.

G
Grant Holloway
EGR plates are thick — no leaks

I was worried about the EGR block-off plates being thin and warping under heat. These are 1/4-inch steel plates with proper gaskets. Torqued to spec and zero exhaust leaks after 6 months. The DPF pipe is 304 stainless with clean welds. Solid kit all around.

E
Edwin molina (United States)

TruckTok 2011-2016 6.6L Duramax LML 4"/5" DP-Back DPF/EGR Delete kit

B
Brett Hanson
Turbo spools noticeably faster

After removing the DPF brick and the EGR restriction, that VVT turbo wakes up. Spool time cut in half. Throttle response is crisp off the line. The engine bay is also way cleaner without the EGR plumbing — there's actually room to work on things now.

P
Perfection Automotive (United States)

TruckTok 2011-2015 6.6L Chevy Duramax Diesel 4inch DPF Delete Pipe Exhaust

J
Jake Bonner (United States)
Great service

Good parts

T
Troy Benson
Complete delete kit — everything you need

If you own an LML Duramax you know the DPF and EGR are the weak links. This kit has both the 4-inch race pipe and the full EGR delete. One box, one install session. Pipe bolted up perfectly to the factory downpipe. EGR plates and block-off kit fit tight. Do yourself a favor and do both at once.

T
Trevor Wilson (United States)

TruckTok 2011-2015 6.6L Chevy GMC Duramax 4" DPF Delete Pipe & EGR Delete Kit

E
Erik Garvin (United States)
Delete pipe install

This could’ve not gone any easier, I purchased this product and once I received it , it only took 3 hours to install and most the time was in removing the dpf tank and all the other junk. I highly recommend this exhaust pipe delete kit.

C
Corey Yergeau (United States)

Fits perfectly

M
Montraig Gipson (United States)
Responsive fast acting.

Pretty nice. Got recommended to you guys.. thanks again can't wait to get mines.