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Contrary to popular belief, boosting power in the latest diesel trucks doesn’t necessarily mandate the removal of emissions equipment. Though bypassing emissions devices may be a common and easy route to increased power, it is, importantly, against the law. That’s highlighted by the example of a 2021 Ford Super Duty which, equipped with a 64-millimeter turbocharger provided by Ryan’s Diesel Service and a custom tune from PPEI, achieves an impressive 632 horsepower and 1,230 pound-feet of torque—without removing the EGR, DPF, or any other emissions components.
These power figures represent significant enhancements over the standard specs, as the Super Duty typically offers 475 hp and 1,050 lb-ft. Kory Willis, the founder of PPEI, took to Instagram to reveal that the truck originally clocked 448 hp at the wheel, aligning closely with manufacturer crank power estimates. Post-modification, the truck now outperforms even the high-output 6.7-liter version of the Super Duty, which delivers a robust 500 hp and 1,200 lb-ft of torque.
It’s worth noting that reaching the 632 hp figure wasn’t achieved on the initial attempt. PPEI had to implement several adaptations, particularly fine-tuning the ignition timing and boost control, to rise to that level of output safely. Willis comments that potential exists for even more power, but this would mean venturing farther from the stock emissions metrics. The focus for this project was to develop a performance package that significantly increases horsepower while still passing stringent smog tests applicable in California and other states governed by the California Air Resources Board (CARB).
To clarify, the current turbo and tune setup has yet to attain CARB certification. It will require a CARB Executive Order number, which involves extensive testing by the manufacturer. PPEI remains positive about passing these evaluations, noting emissions hovering within 10% of factory standards. In addition, due to negligible NOx emissions fluctuations, the modified vehicle does not seem to consume more diesel exhaust fluid as compared to the standard model.
Tuning modern diesel engines while maintaining emissions systems intact requires considerable effort. This process demands hands-on testing, as established methods used on diesel trucks void of emissions constraints are inadequate. Adjustments must be conducted judiciously to avert increased emissions or unnecessary stress on the diesel particulate filter. It is an era where tuners face more obstacles than before. However, adherence to environmental regulations is mandated, a stance reinforced by the EPA to avoid imposing extensive fines.
Clean, legal tuning such as this showcases a promising pathway for diesel performance enthusiasts. With the combination of PPEI’s tuning and Ryan’s Diesel Service’s turbocharger technology passing regulatory hurdles, it could set a precedent for others in the field.
For more insights or queries regarding this topic, reach out directly to the author at caleb@thedrive.com
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FAQ Section
What modifications were done to the Ford Super Duty to increase its power?
The vehicle received a 64-millimeter turbocharger from Ryan’s Diesel Service and a custom tune from PPEI.
Is this modified Ford Super Duty still compliant with emissions regulations?
The truck maintains its emissions equipment and is designed to pass smog tests, but it has not yet received CARB certification as it awaits a CARB Executive Order number.
How much power does the modified Ford Super Duty make?
After the modifications, the truck produces 632 horsepower and 1,230 pound-feet of torque.
Can these modifications lead to increased diesel exhaust fluid consumption?
No, according to PPEI, the NOx emissions levels remain similar to the stock model, thus not increasing diesel exhaust fluid consumption.
Are these types of modifications legal?
Modifications like this aim to enhance performance while remaining within the legal emissions requirements. However, removal or tampering with emissions equipment is illegal.
How were the new power levels achieved?
PPEI’s careful tuning process, particularly adjustments to ignition timing and boost control, allowed for the power increases while maintaining emissions compliance.
Conclusion
The advancements made in this 2020+ Ford Super Duty highlight the potential for significant performance improvements while strictly adhering to emissions regulations. As the automotive industry and enthusiasts navigate the landscape of legal tuning, examples such as this one by PPEI and Ryan’s Diesel Service inspire optimism for the future of diesel performance. It is a step towards environmentally responsible power gains that could deliver the thrill of enhanced performance without compromising compliance with state and federal laws.
