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Need Deleted L5P Advice

Brozat4

By Brozat4
in 6.6L Duramax Diesel (L5P)

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Greg Schmidt New Member

Greg Schmidt

Posted
Posted
On 1/30/2021 at 4:39 PM, Brozat4 said:

Hello from a Canadian. My 2020 AT4 HD 3500 recently threw a check engine light, turns out it was heater #3 in my DEF tank. Two of my co workers have already had this issue months ago and now it's my turn. Dealership is saying 2 to 8 weeks for a new tank to come in. If it happened once its going to happen again next winter. 

 

I am SERIOUSLY considering getting it deleted and tuned with an Optimized Factory tune. Could someone who has already done this and is willing to answer some questions please PM me? It would be greatly appreciate. There is a few things I'd like to know before I drop $8000.

 

Thanks in advance!

do it in Calgary at Schultz diesel sports , much cheaper and highly recommended, I did my 2017 there this spring , 

  • 1 year later...
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In2racn
In2racn

I had the exact same tank heater issue. It was the second time my truck had Limp Mode warnings in 19k miles. This was about the same time frame as your issues,  mid January 2021. They had no idea when

In2racn
In2racn

Good luck with the delete.  My truck is running well.   I wish I never had to delete. My 2020 was extremely quiet in the cab, had enough power and I didn't mind DEF fluid refills. The bigges

DroppingDiesel
DroppingDiesel

Deleted my L5P a while back and it's been running strong. The 4" delete pipe + tune was the way to go for me. Much better throttle response and no more worrying about the emissions stuff

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Jessica willliam New Member

Jessica willliam

Posted
Posted

If you’re considering a delete kit for your 2018 Duramax, I can tell you from personal experience that it’s a worthwhile investment. A delete kit not only enhances performance by increasing horsepower and torque but also improves fuel efficiency. I found that removing the DPF and EGR components led to a noticeable difference in throttle response and overall power delivery.

Plus, the installation process was pretty straightforward, and the quality of the kit I used was top-notch. If you’re serious about maximizing your Duramax’s potential, I highly recommend checking out a reliable delete kit for the 2018 Duramax. It transformed my driving experience!

CRApex Enthusiast

CRApex

Posted
Posted
48 minutes ago, Jessica willliam said:

If you’re considering a delete kit for your 2018 Duramax, I can tell you from personal experience that it’s a worthwhile investment. A delete kit not only enhances performance by increasing horsepower and torque but also improves fuel efficiency. I found that removing the DPF and EGR components led to a noticeable difference in throttle response and overall power delivery.

Plus, the installation process was pretty straightforward, and the quality of the kit I used was top-notch. If you’re serious about maximizing your Duramax’s potential, I highly recommend checking out a reliable delete kit for the 2018 Duramax. It transformed my driving experience!

And now back to our regularly scheduled programming..

  • 2 weeks later...
2500W/T Enthusiast

2500W/T

Posted
Posted (edited)

Here is some interesting... The Chevron Deference was repealed. So what is the Chevron Deference?

 

"The U.S. Supreme Court has overturned the decades-old Chevron doctrine of judicial deference to a federal agency’s interpretation of an ambiguous statute."

 

What is a Deferance?

"Deference is a legal principle that involves a court or other authority yielding to another legitimate party's judgment or decision"

 

With that being said, the EPA might lost their fangs. Most of the Fed Agencies regs were made intentionally vague with the sole purpose to give the agencies wiggle room to interpret them in any way they want.

 

Now, if a group challenge the EPA so called "Experts" in court, stating the DEF, DPF and all the extra nonesense increase fuel consumption, CO2 levels, and throws Ammonia into the atmosphere, might get a good chance to remove legaly all these pesky crap-o-la devices. Not only that, DEF shortages could create a potential risk to national security (paralizing the trucking industry), due the imports of this "Piss Fluid."

 

This not only apply to the EPA, it applies to all Agencies.

 

Perhaps, we are going to see some changes on the emissions tests (Dieselgate) and the usage of the Exhaust Piss Fluid.

Edited by 2500W/T
  • 1 year later...
PBNB Enthusiast

PBNB

Posted
Posted

One of the things I like about the L5P is how clean it runs with no exhaust smell.

 

My hope would be to run the reduced setup but still have the cat to help clean the exhaust. Getting rid of the DEF DPF and EGR would be good for engine longevity and reliability.

 

How stinky are those deletes? I am not looking at rolling coal these days, had that with my TDI and those days are behind me now! 😉 

 

  • 1 month later...
DroppingDiesel New Member

DroppingDiesel

Posted
Posted

Deleted my L5P a while back and it's been running strong. The 4" delete pipe + tune was the way to go for me. Much better throttle response and no more worrying about the emissions stuff

  • Like 1
PBNB Enthusiast

PBNB

Posted
Posted
On 7/9/2026 at 10:35 PM, DroppingDiesel said:

Deleted my L5P a while back and it's been running strong. The 4" delete pipe + tune was the way to go for me. Much better throttle response and no more worrying about the emissions stuff

Did you do this after the warranty expired? Or still under warranty? I am guessing the warranty would be void. 

I am trying to find a happy middle ground on this by perhaps keeping the cat but removing everything else.

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