The 6.7L Powerstroke is a capable engine, but its factory emissions systems significantly limit performance potential. To quantify these restrictions, we conducted back-to-back dyno testing on a 2019 F250 in three configurations:
1. 100% Stock (factory emissions intact)
2. Fully Deleted (EGR/DPF removed, mild tune)
3. Deleted + Aggressive Tuning (maximized airflow & fuel mapping)
This study reveals how EGR/DPF removal and tuning strategies affect power, torque, and drivability—with concrete dyno results.
Testing Methodology
· Same truck, same dyno (Mustang MD-1100)
· All runs in 4th gear (1:1 ratio)
· Corrected for SAE J1349 standards
· Fuel: #2 ULSD (same batch for all tests)
Test Configurations:
1. Stock Baseline
o Factory airbox, exhaust, and tuning
o Emissions systems fully operational
2. Deleted + Mild Tune (50HP)
o EGR delete kit installed
o DPF delete pipe with straight-through muffler
o Conservative street tune
3. Deleted + Hot Tune (150HP)
o High-flow cold air intake
o Performance exhaust manifold
o Aggressive fueling & turbo mapping
Dyno Results: Power & Torque Gains
Configuration
Peak HP
Peak Torque
HP Gain
Torque Gain
Stock
397 HP
880 lb-ft
-
-
Deleted + Mild Tune
452 HP
975 lb-ft
+55 HP
+95 lb-ft
Deleted + Hot Tune
547 HP
1,130 lb-ft
+150 HP
+250 lb-ft
Key Observations:
✔ Even a mild delete + tune unlocks 50+ HP (just from removing EGR/DPF restrictions)✔ Aggressive tuning nearly doubles torque gains (optimized turbo spool & fuel delivery)✔ Power delivery is smoother (no DPF-induced backpressure spikes)
Why Deletes Make Such a Difference
1. EGR Removal Improves Combustion Efficiency
· No recirculated soot means cleaner intake air
· Lower cylinder temps reduce thermal stress
2. DPF Deletion Eliminates Exhaust Restrictions
· Turbo spools 15-20% faster without DPF backpressure
· EGTs drop by 200-300°F under load
3. Tuning Maximizes the Benefits
· Optimized VGT control reduces lag
· Precise fuel mapping prevents smoke while increasing power
Real-World Driving Impressions
· Throttle response is drastically improved
· Turbo lag nearly eliminated in hot tune
· Exhaust note deepens (without being obnoxious)
· MPG gains of 1.5-2.5 observed in mild tune
The Best Delete Setup for Your Needs
For Daily Drivers:
✔ Mild EGR/DPF delete✔ Conservative 50-75HP tune✔ Retains reliability while improving efficiency
For Performance Enthusiasts:
✔ Full delete + high-flow intake/exhaust✔ 150HP+ tune for max power✔ Requires supporting mods (turbo, trans upgrades)
Upgrade Your 6.7L Powerstroke Today
Ready to unlock your Ford diesel’s potential? Our proven EGR/DPF delete kit fits 2011-2023 Power Strokes and includes everything needed for a clean install:👉 2011-2023 Ford 6.7L Powerstroke EGR/DPF Delete Kit
