EGR Delete Kit 6.6 Duramax: Forum Talks, Products & Maintenance
Real diesel owner forum threads on 6.6L Duramax EGR systems, EGR delete kits from DPFexhaust.com, and regular maintenance for the factory setup
What 6.6L Duramax Owners Are Posting About EGR Delete Kits
Check discussions about EGR repair bills, heavy intake soot, EGR cooler leaks, and the decision to delete or keep the factory system from DuramaxDiesels.com.
“LML EGR Parts needed” on DuramaxDiesels.com
Source: duramaxdiesels.com — Thread #79588
A 2011 LML owner wanted to fix EGR bypass valve codes, without paying their dealer $2,800 for repair or conducting a full delete by themselves.
“LBZ Egr delete is a must” on DuramaxDiesels.com
Source: duramaxdiesels.com — Thread #79270
An LBZ owner posted a photo of an EGR intake pipe clogged with 1/8" to 1/4" of soot at 130,000 miles and decided the EGR system had to go.
“Turn off EGR on LML” on DuramaxDiesels.com
Source: duramaxdiesels.com — Thread #82711
A 2015.5 LML owner asked whether turning EGR off in the tune is enough, or if the physical hardware must be removed to stop leaks and coolant loss.
6.6L Duramax EGR Delete Kits at DPFexhaust.com
These EGR delete kits cover 2017+ L5P to 2004-2005 LLY models. All require custom ECU tuning. Check compatible tuner: Mini Maxx V2 Tuner | EZ LYNK Tune Package | EFILive AutoCal V3 Tuner
EGR Valve Cooler Delete Kit for 2017-2023 L5P 6.6L Duramax
- Solid carbon steel rated to 2,732°F with nickel-plated steel flanges.
- Prevents soot buildup and keeps clean, dense air flowing into the intake.
- Direct fit for 2017-2023 L5P Silverado/Sierra 2500/3500 HD (tuning required).
EGR Delete Kit for LML 2011-2016 GMC Chevy 6.6L Duramax Diesel
- Complete EGR removal with aviation-grade aluminum and stainless steel parts.
- Helps lower EGTs and improve turbo response on the 2011-2016 LML.
- Available in black, red, or silver finish options.
LMM EGR Delete Kit 2007.5-2010 6.6L Duramax with Intake Elbow Pipe Tube
- Includes stainless up-pipe, high-flow intake elbow, coolant tube, and block-off plate.
- Reduces carbon buildup and supports better throttle response.
- Built for 2007.5-2010 LMM 6.6L Duramax 2500HD 3500HD trucks.
EGR Delete Kit for 2006-2007 6.6L Duramax LBZ w/High Flow Intake Elbow
- High-flow intake elbow helps reduce intake temperatures.
- Stainless steel and aluminum construction for durability.
- Fits 2006-2007 LBZ 6.6L Duramax Silverado/Sierra 2500/3500 HD.
EGR Delete Kit For 2004-2005 LLY 6.6L Duramax With High Flow Intake
- Direct fit for 2004-2005 LLY 6.6L Duramax HD trucks.
- High-flow intake design reduces carbon buildup in the intake manifold.
- Built for high-temperature, heavy-load off-road and competition use.
EGR Valve Cooler Delete with 3.5" Downpipe Exhaust for 2017-2023 L5P 6.6L Duramax
- 3.5" stainless downpipe replaces the factory downpipe for better exhaust flow.
- Supports sharper throttle response and a stronger base for tuning.
- Complete kit for 2017-2023 L5P 6.6L Duramax (tuning required).
Regular Maintenance Solutions for the Stock 6.6L Duramax EGR System
If you want to keep the factory EGR system in place, regular maintenance can solve many of the problems owners report in the forums such as carbon-choked intakes, leaking EGR coolers and valves, bypass valve failures, and dirty sensors.
1. Clean or Replace the EGR Valve and Cooler Bypass Valve
Carbon and condensation can make the EGR bypass valve stick. Remove the valve, clean the pintle and passages, and check the motor for moisture or corrosion. A stuck gear is often the root cause of P24C6, P2458, and P049D codes.
2. Inspect the EGR Cooler, Valve, and Feed Pipes for Leaks
Look for coolant loss, white residue, or wet spots around the EGR cooler, valve, and feed pipe. A leaking EGR valve or cooler can cause unexplained coolant loss and frequent regeneration cycles. Replace the cooler gaskets, valve O-rings, and feed-pipe seals at the first sign of seepage.
3. Check EGR Temperature Sensors and Wiring
Codes like P040F, P040C, and P040D often come from skewed EGR temperature sensors. Compare the sensor readings to ambient temperature after an 8-hour cold soak, and inspect the wiring harness for chafing near the hot exhaust components.
4. Keep the Intake Mouthpiece, Throttle Body, and Intercooler Boots Clean
EGR soot can pack the intake runners and mouthpiece with 1/8" or more of carbon over 100,000 miles. Clean the mouthpiece, throttle body, and intake ports during routine service. A PCV reroute is a common companion mod that reduces oil vapor mixing with soot, and checking intercooler boots for leaks helps keep EGTs in check.
Have questions about which EGR delete kit or maintenance parts fit your 6.6L Duramax? Reach out to our team at service@dpfexhaust.com and let us help.
Questions about parts, fitment, or installation?
Our support team is just an email away: service@dpfexhaust.com
Hope this article helps you find the right setup for your 6.6L Duramax.
Have a great day! 🙂
