6.7 Powerstroke Delete MPG Calculator: Real ROI & Fuel Savings Guide

Author: Lawrence Z, Diesel Performance Specialist at DPFexhaust

⚠️ LEGAL DISCLAIMER: OFF-ROAD USE ONLY

The following content discusses automotive modifications intended strictly for off-road competition use. Removing emissions components is illegal on street-registered vehicles. The MPG figures below are based on user-reported data for off-road applications.

"How much MPG will I gain?"

This is the second most common question we get about deleting a 6.7L Powerstroke (right after "How much horsepower?").

The forums are full of wild claims—some say they gained +8 MPG, others say nothing changed. If you are about to invest ~$1,500 into a full delete bundle (Exhaust + Tuner + EGR Kit), you want to know the Return on Investment (ROI).

Since there is no "magic button" that predicts your exact mileage, we have built this guide and manual calculator logic to help you crunch the real numbers. Here is how to calculate exactly when your delete kit will pay for itself.

1. The "Paper Napkin" Calculator: Do The Math

You don't need a complex app to figure this out. You just need three numbers: your Annual Mileage, your Current Diesel Price, and your Kit Cost.

Here is the formula to calculate your Break-Even Point:

Step 1: Calculate Gallons Saved Per Year

(Annual Miles ÷ Current MPG) - (Annual Miles ÷ New MPG) = Gallons Saved

Step 2: Calculate Money Saved

Gallons Saved × Price Per Gallon = $ Annual Savings

Step 3: The "Payoff" (Break-Even Point)

Total Kit Cost ÷ $ Annual Savings = Years to Pay Off

🧮 Real World Example (The Average User)

Let's assume you drive a 2015 F-250, run 20,000 miles a year, and diesel is $4.00/gallon. You buy a complete kit for $1,500.

• Stock MPG: 14 MPG

• Deleted MPG: 18 MPG (+4 MPG increase)

The Math:

1. Stock Usage: 20,000 ÷ 14 = 1,428 Gallons

2. Deleted Usage: 20,000 ÷ 18 = 1,111 Gallons

3. Savings: 317 Gallons Saved x $4.00 = $1,268 Saved per Year

4. Payoff: $1,500 Kit ÷ $1,268 = 1.18 Years

The Verdict: In this scenario, the kit pays for itself in roughly 14 months. Every mile driven after that is pure profit.

2. Realistic Expectations: MPG Gains by Model Year

Can you really expect a +4 MPG jump? It depends heavily on which generation of the 6.7L Powerstroke you own. Use this table to plug realistic numbers into the calculator above.

Note: These figures assume "Mixed Driving" (City/Highway). Pure highway driving will see higher gains.

3. The "MPG Killers": Why You Might Not See Gains

We value honesty. Sometimes, customers delete their trucks and see zero improvement in MPG. Why?

A. The "Lead Foot" Syndrome

Deleting your truck adds significant horsepower (usually +100HP on a street tune) and torque. It also makes the exhaust sound incredible.

• The Result: You subconsciously drive harder, accelerate faster, and rev higher to hear the turbo whistle.

• The Fix: You must drive conservatively to see the fuel savings.

B. The 37-Inch Tire Factor

Did you install a lift kit and 37" tires at the same time you deleted?

• The Math: Every inch of tire diameter and added rotating mass kills fuel economy.

• The Reality: A delete kit will usually just cancel out the MPG loss from big tires. You won't save money, but you won't lose as much as you would have on a stock tune.

C. The Wrong Tune

Running a "Race" or "Soot Cooker" tune dumps excess fuel. For maximum MPG, you need to run a dedicated "Economy" or "Tow" tune that advances timing for efficiency, not just raw power.

4. The "Hidden" ROI: Maintenance Savings

Even if you have a 2022 model and only gain +1 MPG, the delete kit is often still worth the investment. Why? Because you left out one variable in the calculator: Repair Costs.

The DPF and EGR systems are maintenance items.

• DPF Replacement Cost: $2,500 - $4,000

• EGR Cooler Repair: $1,200 - $1,800

• DEF Heater Repair: $600 - $1,200

If your delete kit prevents even one of these failures, the ROI is instant. The fuel savings are just the bonus on top.

Ready to Start Saving?

Now that you've crunched the numbers, you know if it makes sense for your wallet. If you are ready to improve your MPG and reliability, check out our bundles below.

👉 [Shop Complete 6.7 Powerstroke Delete Bundles (Tuner + Pipe + EGR)] Pre-configured for maximum fuel efficiency.

 

EGR/DPF/DEF Delete for 2011-2019 Ford 6.7L Powerstroke All-in-One Kit Overview

Suitable for 2011-2019 Ford F250/F350/F450 6.7L Powerstroke diesels

Upgrade Your 6.7 Powerstroke