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Duramax L5P Exhaust Part & Delete Kit (2017-Present)
Unleash your 2017-present Chevy Silverado or GMC Sierra's potential with EGR Performance's L5P Upgrades
Explore the best 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 L5P delete kit for power gains – the ultimate off-road solution for 6.6L Duramax engines.
Featuring L5P Duramax exhaust systems, downpipe, intake horn, and CAN bus plugs, these L5P upgrade kits boost horsepower, torque, and efficiency.
Enjoy seamless installs, free shipping, and unmatched reliability for towing or racing.
- 3.5'' Downpipe Exhaust for 2017-2023 6.6L Duramax L5P Chevy Silverado Gmc Sierra 2500 3500HD $229.79 /5.0In stock
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EGR Performance - Best EGR DPF Delete Shop for Powerstroke/Duramax/Cummins
Overview of Duramax L5P Exhaust & Delete Kits
A Duramax L5P exhaust and delete kit removes restrictive emissions like DPF, EGR, and DEF, boosting airflow for raw power. Enthusiasts choose the best L5P delete kit for its proven gains in HP, torque, and efficiency, ideal for towing or racing.
Our kits, starting at $29.90, deliver pro-grade performance – shop now with free shipping and transform your ride!
Benefits of Upgrading Your L5P Exhaust System
Why delete? Expect 50-100+ HP and 100-200 lb-ft torque jumps, plus 3-5 MPG improvements by ditching regens.
A L5P Duramax downpipe and full exhaust slash backpressure, dropping EGTs for safer hauling. Owners rave about crisper throttle, reduced carbon buildup, and a throaty growl – perfect for deleted L5P builds.
Our EGR Performance L5P delete review highlights unmatched reliability, backed by 10+ years of expertise. Long-term? Save on DEF refills and maintenance – a smart investment for tuned and deleted L5P Duramax for sale seekers.
Components Included in a Typical Delete Kit
Our best L5P delete kit packs everything: aluminum alloy L5P Duramax downpipe, mid-pipe, high-flow muffler/resonator, gaskets, clamps, and hardware.
Add-ons like L5P intake horn for smoother airflow, L5P CAN bus plugs to bypass sensors, and ECM tuners prevent codes.
For full deletes, include EGR plates and DEF bypass – all rigorously tested for durability. Priced competitively with a 1-year warranty, it's the complete package for L5P delete tuning.
Compatibility and Fitment Guide
Fits 2017-2025 models: 2017, 2018, 2019, 2020, 2021, 2022, 2023 up to 2024 Duramax delete kit and 2025 L5P delete kit. Compatible with GMC Sierra/Chevy Silverado 2500/3500 HD in all cabs/beds.
Note: 2024-2025 requires bench ECM unlock (~$1000 extra). Our kits ensure bolt-on ease, no cutting needed for most.
Step-by-Step Installation Process
DIY in 3-5 hours: Jack up truck, remove stock exhaust/EGR/DPF (torque to 25-30 lb-ft), install L5P down pipe and components, flash ECM with tuner. Pro tip: Use anti-seize on bolts.
For deleting L5P Duramax, our 24/7 support guides you – or opt for pro install to avoid voids.
Maintenance & Upkeep Tips
Inspect every 10,000 miles: Re-torque fasteners (20 lb-ft), clean L5P intake horn, check L5P CAN plugs. Oil changes every 5,000 miles extend life. Avoid street use to stay legal – our kits thrive off-road.
Trust EGR Performance – certified quality, customer wins. Upgrade today!
Frequently Asked Questions
Q: Is it legal to install an exhaust delete kit on my Duramax L5P?
A: Regulations vary by state. Federal law prohibits tampering with emissions controls on public roads; check CARB status if you’re in a California or CARB-adopted state.
Q: Will deleting the DEF and DPF systems void my truck’s warranty?
A: Yes, tampering with emissions systems typically voids factory warranties. Always verify with your dealer and consider aftermarket warranties.
Q: Can I install the kit myself, or should I seek professional help?
A: A competent DIYer can follow the included instructions, but shops ensure proper fitment, torque specs, and safe vehicle lifts.
Q: What tuning is required after installing the delete kit?
A: A custom or pre-loaded tune that adjusts fuel maps, EGT thresholds, and boost targets is recommended to maximize performance and protect engine health.
Q: How long does the installation take?
A: Typically 3–5 hours, depending on experience level and available tools.
Q: Which delete kit offers the best value for daily driving vs. racing?
A: Mid-range kits balance noise and performance for daily use; high-flow, straight-through systems suit racing or heavy-haul applications.
Let customers speak for us
from 284 reviews
So far so good with my AFM delete on my 2017 Silverado
5.3 with the factory sport exhaust. I haven’t driven far yet but I can already feel the difference at low speeds being my V8 mode is always on now. The light goes off after shutting my truck off so no battery drain. Before my truck had like a flutter sound at low rpm at speeds around 40mph I guess that’s when my V4 mode was kicking in. But instantly that’s gone now also just slightly pressing the gas pedal now the engine comes alive quicker than before. I’m very satisfied so far and for the 40s $ price range. I first looked at one for around 300 bucks. 5 stars I’m impressed thanks

Ordering process with short, sweet, and to the point; exactly how I like it. The product arrived when it was supposed to. I would definitely order from this company again.

Great overall

it was easy to install and great delivery, got it within 4 days of ordering
I just received the fuel management delete module and let me tell you how happy I am with this thing… all it was claimed to be… very fast shipping…AAAA+=++!!

I know now that my Chevy 5.3 will not fail after 90k miles as the stupid 4/8 change system has been eliminated. Super easy plug and play on my Silverado.

Product came i plugged it up and it works the way it states i recommend everyone with a5.3 and 6.2 get this ASAP

Oil Catch Can for 5.7L 6.4L HEMI 2011-2021 Dodge Charger Challenger Chrysler 300

Keeps my truck in v8, Great!

EGR Delete Plug Kit for 2010-2024 Cummins ISX 15 CM2250 CM2350 Plug Kit

Nice!

Stops the motor from kicking down to 6 or 4 cylinders which is supposed to add years to the motor. Thanks

Even before I purchased this, I was experiencing minor hesitation issues without the Check Engine Light. Also since I purchased this truck 4 yrs back, as I type this out, I had to replace the EGR within 3 months. Other vehicles owned with EGR have not experienced this level of issue when the code was checked on the CEL. Now I have been living with the EGR issue in recent months this time, until I determined what steps I wanted to take to permanently resolve this. After weeks of searching, and no real difference between everyone I looked at on the web, and it kinda was a no brainer, spend the money on a new EGR valve, or spend the same amount and eliminate, in essence bypass the valve emission system all together, especially since this truck at 35 years is not required emissions check in this state at 25 years.
My apologies for taking this much time to respond. The block off plate in this kit for my truck is not necessary. The plug on the sensor was removed, the slave was set, the wiring harness secured to a location out of the way of any issue, CEL cleared. After 3 days with some minor hesitation issues still existing, it was determined the vacuum line originally left alone might need to be plugged. To conclude since the vacuum line was plugged there were no signs of hesitation from standing start or any driving conditions requiring further increased pressure on the gas.
Thank you I am pleased with the response, the resolution of the EGR issue, full stop...

I bought the kit with the up-pipe to delete the EGR cooler feed inlet from the exhaust instead of the small disk that blocks it off. My mistake but, don’t get pinched like I did.

I run a small business, and it ain't always easy. Sometimes the best you can do is correct mistakes when they happen. I had a problem with the two AFM disablers I purchased (purchased together).
I contacted EGR and they acknowledged they did have an issue with some of them. They immediately sent me two replacements and the replacements are working fine.
In my opinion, that's how it should be. Thanks.