PSC Fuel Economy Package OBS 7.3L Powerstroke (1994-1997)

OBS 7.3L Power Stroke Fuel Economy Package (1994–1997)

Built to Improve Efficiency, Reduce Restriction, and Modernize an OBS 7.3L

Our OBS 7.3L Power Stroke Fuel Economy Package is designed for owners who want real fuel economy gains, smoother drivability, and improved reliability from their classic 7.3L—without pushing the engine into unsafe power levels.

This package targets the biggest MPG killers on OBS trucks: intake restriction, exhaust backpressure, heat, and outdated fueling control. With correct tuning, many trucks see a noticeable improvement in highway MPG and cruising efficiency.

What’s Included

Banks Power Intercooler Kit
• Significantly lowers intake air temperatures
• Improves combustion efficiency
• Reduces EGTs during cruising and towing

Martys Diesel E-Fuel Kit
• Modernizes the factory fuel system
• Provides consistent fuel pressure
• Improves fueling stability and efficiency

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

Hydra Chip (Includes 15 Custom Tunes) 
• Allows fuel-economy-focused tuning
• Improves throttle control and drivability
• Required to fully realize MPG gains from this package

Non-EBPV Turbo Pedestal & High-Flow Exhaust Outlet
• Eliminates the restrictive factory exhaust back-pressure valve
• Improves exhaust flow and reduces drive pressure
• Lowers heat and improves turbo efficiency

ODawg Diesel Up-Pipes
• Replaces leak-prone factory up-pipes
• Improves exhaust flow to the turbo
• Helps maintain consistent boost and efficiency

Estimated Fuel Economy Improvement

Estimated MPG increase with correct tuning:
➡ 2–4 MPG

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

This package is designed to support real-world 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: 2–4 MPG with correct tuning
• Package cost: $4,295

Estimated Annual Fuel Savings

• 2 MPG gain: ~$850–$900 per year
• 3 MPG gain: ~$1,250–$1,350 per year
• 4 MPG gain: ~$1,650–$1,800 per year

Estimated Payback Time

• 2 MPG: ~4.5–5 years
• 3 MPG: ~3–3.5 years
• 4 MPG: ~2.3–2.6 years

At 25,000 miles per year, many owners can recover the cost of this package in 3–5 years through fuel savings alone, depending on driving habits and tuning.

Why This Package Works on an OBS 7.3L

• Dramatically reduces intake and exhaust restriction
• Lowers intake air temperatures and EGTs
• Eliminates factory exhaust back-pressure issues
• Modernizes fueling on an older platform
• Improves drivability and cruising efficiency
• Maintains long-term engine reliability

Unlike power-focused builds, this package addresses the core inefficiencies built into stock OBS trucks.

Realistic Results & Expectations

• Estimated gain: 2–4 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

• OBS 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 OBS 7.3L Power Stroke to run cooler, breathe easier, and cruise more efficiently, this package delivers proven airflow, fueling, and exhaust upgrades that can provide real MPG gains and long-term value—not just seat-of-the-pants improvements.