Mark Peterson

Hi, I'm Mark Peterson. With 20 years under the hood of heavy-duty diesel trucks, I’ve seen every wrench turn and sensor failure imaginable.

As the lead editor at EGR Performance, my mission is to help Powerstroke, Cummins, and Duramax owners push their engines to the limit without the headaches of Limp Mode or endless CEL codes. I don't just review parts—I provide field-tested solutions based on two decades of diagnostic data.

Mark Peterson's Articles

How to Fix a P0299 Code on 6.7 Powerstroke Diesel

How to Fix a P0299 Code on 6.7 Powerstroke Diesel

2026-05-15
6.7 Powerstroke CP4 Replacement Guide & Best Upgrade Options

6.7 Powerstroke CP4 Replacement Guide & Best Upgrade Options

2026-05-13
6.0 Stand Pipe and Dummy Plug Replacement: Steps and Costs

6.0 Stand Pipe and Dummy Plug Replacement: Steps and Costs

2026-05-12
Mini Maxx Tuner Review: Features, Gains & V1 vs V2 Guide

Mini Maxx Tuner Review: Features, Gains & V1 vs V2 Guide

2026-05-10
Mini Maxx Tuner Installation: Fast & Error-Free Setup

Mini Maxx Tuner Installation: Fast & Error-Free Setup

2026-05-08
How to Fast Diagnose & Fix 7.3 Powerstroke P1249 Code

How to Fast Diagnose & Fix 7.3 Powerstroke P1249 Code

2026-05-06
7.3 Powerstroke P1316 Code: Symptoms, Causes & Fixes

7.3 Powerstroke P1316 Code: Symptoms, Causes & Fixes

2026-05-04
7.3 Powerstroke Performance Upgrades to Boost Power & Reliability

7.3 Powerstroke Performance Upgrades to Boost Power & Reliability

2026-05-02
7.3 EBPV Delete: Pros, Cons & Performance Impact Explained

7.3 EBPV Delete: Pros, Cons & Performance Impact Explained

2026-04-30
Replace a 7.3 PowerStroke Engine Harness 94-03: 12 Easy Steps

Replace a 7.3 PowerStroke Engine Harness 94-03: 12 Easy Steps

2026-04-28
DIY Instruction: How to Delete EBPV on 7.3 PowerStroke

DIY Instruction: How to Delete EBPV on 7.3 PowerStroke

2026-04-26
Is an EGR Delete Still Illegal? 2026 Federal Law & EPA Rules

Is an EGR Delete Still Illegal? 2026 Federal Law & EPA Rules

2026-04-24
OEM vs Aftermarket Tuner Harness Plug: Which Kit is for You?

OEM vs Aftermarket Tuner Harness Plug: Which Kit is for You?

2026-04-22
Buy Diesel Tuner Harness Plugs Online: Best Kits & Retailers

Buy Diesel Tuner Harness Plugs Online: Best Kits & Retailers

2026-04-20
11 Common 7.3 PowerStroke Problems You Should Know

11 Common 7.3 PowerStroke Problems You Should Know

2026-04-17
7 Bad 6.7 Cummins EGR Valve Symptoms You Shouldn’t Ignore

7 Bad 6.7 Cummins EGR Valve Symptoms You Shouldn’t Ignore

2026-04-15
Mini Maxx V1 vs V2 Guide: Best Tuner for 2003–2021 Diesel

Mini Maxx V1 vs V2 Guide: Best Tuner for 2003–2021 Diesel

2026-04-14
6.7 Cummins EGR Delete: 3-4 Hours DIY Step-by-Step Guide

6.7 Cummins EGR Delete: 3-4 Hours DIY Step-by-Step Guide

2026-04-13
2026 Best 6.7 Powerstroke CCV Reroute for Quality & Compatibility

2026 Best 6.7 Powerstroke CCV Reroute for Quality & Compatibility

2026-04-11
How to Do a 6.7 Cummins CCV Reroute or Delete

How to Do a 6.7 Cummins CCV Reroute or Delete

2026-04-10
How to Fix a Faulty Tuner Harness Plug Connector

How to Fix a Faulty Tuner Harness Plug Connector

2026-04-09
6.0 Powerstroke EGR Delete: Can It Blow a Head Gasket?

6.0 Powerstroke EGR Delete: Can It Blow a Head Gasket?

2026-04-08
How To Delete 6.7 Powerstroke CCV - A Step-by-step Guide

How To Delete 6.7 Powerstroke CCV - A Step-by-step Guide

2026-04-07
6.7 Powerstroke CP4.2 Failure: Signs, Fixes & Prevention

6.7 Powerstroke CP4.2 Failure: Signs, Fixes & Prevention

2026-04-05
Best 6.7 Disaster Prevention Kit: Which Saves You Thousands

Best 6.7 Disaster Prevention Kit: Which Saves You Thousands

2026-04-03
Best Tuner for 6.4 Powerstroke: Top 5 Picks for Reliability

Best Tuner for 6.4 Powerstroke: Top 5 Picks for Reliability

2026-04-01
Is a 6.7 Cummins CCV Delete Worth It? Pros & Cons Guide

Is a 6.7 Cummins CCV Delete Worth It? Pros & Cons Guide

2026-03-30
How Much Horsepower Does a Deleted 6.7 Powerstroke Have?

How Much Horsepower Does a Deleted 6.7 Powerstroke Have?

2026-03-27
Best Tuner Harness Kits 2026: Performance & Easy Installation

Best Tuner Harness Kits 2026: Performance & Easy Installation

2026-03-26
6.4 Powerstroke MPG After DPF Delete: Real-World Expectation

6.4 Powerstroke MPG After DPF Delete: Real-World Expectation

2026-03-25
EGR Delete Cost Guide 2026: Real Prices, Parts & Labor

EGR Delete Cost Guide 2026: Real Prices, Parts & Labor

2026-03-24
How to Fast Install a Tuner Harness Plug for Engine Tuning

How to Fast Install a Tuner Harness Plug for Engine Tuning

2026-03-23
EGR Delete Check Engine Light: Causes & Fixes

EGR Delete Check Engine Light: Causes & Fixes

2026-03-22
Best Tuner for a 6.0 Powerstroke: Safe Power with Monitoring

Best Tuner for a 6.0 Powerstroke: Safe Power with Monitoring

2026-03-19
Guide to EGR Deletes: Function, Pros, Cons, and Alternatives

Guide to EGR Deletes: Function, Pros, Cons, and Alternatives

2026-03-16