2020+ Ford Super Duty Makes 632 HP With Just a Turbo and a Tune—No Deletes

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By Car Brand Experts


2020+ Ford Super Duty: Reaching 632 HP Without Removing Emissions Control

In the world of diesel trucks, it’s often believed that boosting power means stripping away emissions equipment. But what if we told you that a 2021 Ford Super Duty is breaking that notion with a 632-horsepower output and 1,230 pound-feet of torque, all without ditching the EGR, DPF, and other emissions components?

Unveiling the Power Increase

The 6.7-liter Power Stroke engine in this Super Duty, equipped with just a 64-millimeter turbo from Ryan’s Diesel Service and a PPEI tune, has seen significant power gains. From the factory’s 475 horsepower and 1,050 pound-feet of torque, the truck now boasts an impressive 632 horsepower, outperforming even the high-output 6.7-liter Super Duty rated at 500 horsepower and 1,200 pound-feet of torque.

Insight From PPEI Founder

Kory Willis, the founder of PPEI, shared on Instagram that the stock truck had 448 horsepower at the tire, aligning closely with the factory’s stated crank power figures. With the turbo and tune upgrade, this Super Duty has ramped up its performance to a level that surpasses expectations without sacrificing emissions compliance.


The ability to achieve such high power figures without removing emissions controls showcases the potential for innovative tuning and turbo upgrades. This 2021 Ford Super Duty demonstrates that it’s possible to push boundaries in performance while respecting environmental regulations.


Is boosting power without deleting emissions equipment legal?

Yes, upgrading a vehicle’s power without removing emissions equipment can be done legally through aftermarket upgrades like larger turbos and tuning modifications.

Will retaining emissions control components affect the truck’s longevity?

When done properly with reputable upgrades and tunes, retaining emissions control components should not significantly impact the longevity of the vehicle. In fact, it can even enhance performance while maintaining compliance.

Is it common to achieve such high power gains without deleting emissions equipment?

While it’s more common to see significant power increases by deleting emissions equipment, advancements in tuning and turbo technology are enabling enthusiasts to reach impressive power levels while keeping emissions controls intact.# Article

Unveiling the Power of PPEI’s High-Performance Tuning: A Closer Look

PPEI’s Horsepower Journey

PPEI didn’t achieve 632 hp in a single attempt. Through a series of adjustments, mainly focusing on ignition timing and boost parameters, they successfully reached this significant peak. Kory Willis mentions that there’s still room for more power if they weren’t also aiming to adhere closely to the stock emissions standards. Their goal is to design a tuning package that significantly boosts power while ensuring the vehicle remains compliant with smog regulations in California and other CARB states.

Striving for CARB Compliance

While the current tune and turbo combination is potent, it’s essential to highlight that it’s not yet CARB-ready. The process to obtain a CARB Executive Order number involves extensive testing by the manufacturers. PPEI is optimistic about passing these tests as they claim to keep emissions within 10% of the OEM’s standards. Moreover, the NOx emissions remain stable, meaning there’s no excessive consumption of diesel exhaust fluid compared to stock levels.


PPEI’s commitment to balancing power enhancement with environmental compliance showcases their dedication to providing high-performance solutions within regulatory frameworks. As they continue to refine their products, drivers can expect a blend of power and eco-friendliness in their vehicle upgrades.


1. What is PPEI?

PPEI stands for “Precision Performance Enterprises Inc.,” a company specializing in aftermarket tuning solutions for diesel-powered vehicles to optimize performance.

2. How does PPEI achieve higher horsepower figures?

PPEI utilizes advanced tuning techniques, focusing on factors like ignition timing and boost parameters, to safely increase horsepower in diesel engines.

3. Is PPEI’s tuning CARB-compliant?

While PPEI’s tuning aims to meet CARB standards, it requires a CARB Executive Order number, which involves extensive testing to ensure compliance with emissions regulations.

4. Does PPEI’s tuning impact emissions?

PPEI’s tuning strives to keep emissions within 10% of the OEM standards, maintaining a balance between increased performance and environmental responsibility.### Headline:
Exploring the Challenge of Tuning Modern Diesel Engines with Emissions Systems


Tuning modern diesel engines with emissions systems has proven to be a challenging task. Unlike in the past, where adjustments were more straightforward, today’s emission regulations necessitate a careful approach to prevent spikes in tailpipe emissions or excessive diesel particulate filter regens. The Environmental Protection Agency (EPA) insists on compliance to avoid severe fines, pushing companies to innovate in clean tuning practices.

The Complexity of Diesel Engine Tuning:

Modern diesel engines come with stringent emissions systems that require a new level of expertise and testing. Tuners must adapt to these changes by fine-tuning engines with emissions control in mind. The traditional methods without considering emissions may lead to legal and environmental repercussions.


The success of PPEI and Ryan’s Diesel Service in clean tuning demonstrates a promising direction for the industry. Adapting to comply with emissions regulations not only ensures legal operation but also fosters innovation in diesel performance.


Q: Why is tuning modern diesel engines with emissions systems challenging?

A: The stringent emissions regulations require tuners to adjust carefully to avoid violating legal limits on tailpipe emissions and diesel particulate filter regenerations, which were less of a concern in the past.

Q: What are the consequences of not complying with emission regulations?

A: Non-compliance can lead to hefty fines, urging companies to prioritize clean tuning practices to adhere to environmental standards and legal requirements.

Q: How does successful clean tuning benefit the diesel performance industry?

A: Successful clean tuning not only ensures legal operation but also paves the way for further advancements in diesel engine performance within the framework of emission regulations.

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