PSC Fuel Economy Package 1999-2003 7.3L Powerstroke

1999–2003 7.3L Power Stroke Fuel Economy Package

Built to Improve Airflow Efficiency, Reduce Restriction, and Modernize Fuel Delivery

Our 1999–2003 7.3L Power Stroke Fuel Economy Package is designed for owners who want real-world MPG improvements, smoother drivability, and better long-term reliability—without turning the truck into a high-stress performance build.

This package addresses the biggest efficiency limitations of early Super Duty 7.3Ls: restrictive intercooling, exhaust backpressure, inconsistent fuel delivery, and outdated tuning strategies.

With correct tuning, many trucks cruise more efficiently, require less throttle to maintain speed, and operate with lower EGTs during daily driving and light towing.

What’s Included

KC Turbos 7.3L to 6.0L Intercooler Conversion Kit
• Dramatically improves intercooling efficiency over the factory setup
• Lowers intake air temperatures
• Reduces heat soak and supports more efficient combustion

S&B Filters Cold Air Intake
• Reduces intake restriction
• Improves airflow and throttle response
• Helps reduce pedal input at steady highway speeds

Hydra Chip
• Allows fuel-economy-focused tuning
• Improves throttle control and drivability
• Required to fully realize MPG gains from this package

Non-EBPV Pedestal & Up-Pipes
• Eliminates the restrictive factory exhaust back-pressure valve
• Reduces drive pressure and exhaust restriction
• Improves turbo efficiency and lowers heat

High-Flow Exhaust Outlet
• Deletes the factory EBPV valve at the turbo outlet
• Improves exhaust flow and reduces backpressure
• Supports more efficient cruising

FASS Fuel System (Stock–700 HP)
• Provides consistent, clean fuel supply
• Stabilizes fuel pressure on higher-mileage trucks
• Supports smooth, efficient fueling and long-term reliability

Estimated Fuel Economy Improvement

Estimated MPG increase with correct tuning:
➡ 1–3 MPG

MPG gains are most noticeable during highway driving and steady cruising, where reduced intake and exhaust restriction allow the truck to maintain speed with less throttle input.

This package is designed to support MPG improvements, not guarantee them.

Fuel Savings & ROI (25,000 Miles Per Year)

Assumptions

• Annual mileage: 25,000 miles
• Diesel price: $4.00 per gallon
• Estimated improvement: 1–3 MPG with correct tuning
• Package cost: $3,125.15

Estimated Annual Fuel Savings

• 1 MPG gain: ~$430–$470 per year
• 2 MPG gain: ~$860–$930 per year
• 3 MPG gain: ~$1,280–$1,400 per year

Higher fuel prices or highway-heavy driving can increase savings.

Estimated Payback Time

• 1 MPG: ~6.5–7 years
• 2 MPG: ~3.3–3.7 years
• 3 MPG: ~2.2–2.5 years

At 25,000 miles per year, a 2 MPG improvement can allow many owners to recover the cost of this package in roughly 3–4 years through fuel savings alone.

Why This Package Works on a 1999–2003 7.3L

• Significantly improves intercooling efficiency
• Reduces intake and exhaust restriction
• Eliminates factory exhaust back-pressure issues
• Modernizes fueling on an aging platform
• Improves drivability and cruising efficiency
• Maintains stock turbo reliability

Unlike power-focused builds, this package targets the core inefficiencies that hurt MPG on early Super Duty 7.3Ls.

Realistic Results & Expectations

• Estimated gain: 1–3 MPG with correct tuning
• Results vary based on gearing, driving style, load, maintenance, and tune selection
• MPG gains are most noticeable at steady highway speeds
• Fuel-economy tuning on the Hydra is required for best results

Perfect For

• 1999–2003 7.3L daily drivers
• Highway commuters
• Light to moderate towing
• Owners focused on efficiency, drivability, and longevity
• Trucks retaining a stock or mildly upgraded turbo

Bottom Line

If you want your 1999–2003 7.3L Power Stroke to run cooler, breathe easier, and cruise more efficiently, this package delivers proven airflow, fueling, and exhaust upgrades that provide real-world fuel economy gains and long-term value.

Already have some parts? Don’t worry — we’ll credit you for what you already own.