EGR vs. EGR Delete Kits: Which Is Right for Your Vehicle?

🔧 Introduction

The Exhaust Gas Recirculation (EGR) system is a critical emissions control component in modern engines—but it’s also one of the most debated. While it helps reduce pollution, many drivers—especially diesel owners—opt for EGR delete kits to boost performance and reliability.

But is deleting your EGR system worth it? Let’s break down the key differences, benefits, and legal risks to help you decide.

🛠️ EGR System: How It Works & Why It’s Used

✔ Purpose of EGR

The EGR system recirculates exhaust gas back into the engine’s intake to:

Reduce NOx emissions (lowers combustion temps).
Improve knock resistance (gasoline engines).
Meet strict EPA/Euro emissions standards.

❌ Common Problems with EGR

Despite its benefits, EGR systems cause major headaches:

⚠️ Carbon buildup → Clogs intakes, valves, and turbos.
⚠️ Reduced efficiency → Exhaust gas displaces oxygen.
⚠️ EGR cooler failures → Coolant leaks can cause hydro-lock.
⚠️ Frequent maintenance → Cleaning, valve replacements.

*(Example: A clogged EGR valve can cut power by 15-20% in diesel trucks.)*

⚡ EGR Delete Kits: What They Do & Why People Use Them

🔧 How an EGR Delete Works

An EGR delete kit removes/bypasses the factory system by:

Blocking EGR ports (with metal plates).
Rerouting coolant lines (if removing the cooler).
Using a tuner (to prevent check engine lights).

✔ Benefits of Deleting EGR

✅ No more carbon buildup → Cleaner engine internals.
✅ Improved throttle response & power → Better airflow.
✅ Lower maintenance costs → No EGR failures.
✅ Possible MPG gains → More efficient combustion.

⚠️ Drawbacks of EGR Delete

🚫 Illegal for on-road use (EPA fines up to $10,000+).
🚫 Voids factory warranty (if detected).
🚫 Fails emissions tests (where required).

(Fun fact: 72% of race Duramaxes run deleted—SEMA 2023.)

🔍 EGR vs. EGR Delete: Side-by-Side Comparison

Feature	Factory EGR	EGR Delete Kit
Emissions Legal?	✅ Yes	❌ No
Power Output	⚠️ Reduced	✅ Increased
Maintenance	❌ High	✅ Low
Reliability	❌ EGR failures	✅ No issues
Best For	Daily drivers	Off-road/racing

🔄 Alternatives to a Full EGR Delete

If you want some benefits without breaking laws, consider:

🔧 Regular EGR cleaning (prevents carbon buildup).
💻 Performance tuning (reduces EGR operation but keeps it functional).
🔩 Upgraded EGR coolers (more durable aftermarket options).

🏁 Final Verdict: Should You Delete Your EGR?

✔ Delete EGR if:

You use the vehicle off-road or for racing.
You prioritize performance & reliability over emissions compliance.

❌ Keep EGR if:

You drive on public roads (avoid fines & warranty issues).
You live in an area with strict emissions testing.

🚀 Why Use an CrevoC EGR Delete for 2017-2019 L5P Duramax?

🛑 Stops Engine Suffocation
- Prevents clogged intakes.
- Eliminates power-robbing carbon.
- Avoids $2,300 cooler repairs.
💨 Unlock Hidden Power
- +3-5 MPG gains (reported by owners).
- Lower engine temps.
- Crisper throttle response.
💰 Smarter Than Replacing
- One $800 delete outlasts multiple $400 cleanings.