The Mack E7 engine is a workhorse known for its reliability. However, many owner-operators and fleet managers seek ways to enhance its performance and fuel economy. This article delves into various Mack E7 Performance Upgrades, focusing on proven modifications that deliver tangible results.
Unleashing the Potential of Your Mack E7: Performance Enhancements
Pittsburgh Power has developed a performance computer specifically for the electronic E7 Mack engine, achieving significant horsepower gains. Initial testing showed an 80 hp increase at the rear wheels, with ongoing efforts aiming for at least 160 hp. This illustrates the potential for electronic tuning to unlock hidden power within the E7.
Beyond the Computer: Mechanical Mack E7 Performance Upgrades
Performance gains aren’t solely reliant on electronic tuning. Addressing restrictive components in the exhaust system can yield notable improvements. Replacing a restrictive muffler with a straight-through performance muffler, coupled with eliminating unnecessary 90-degree elbows in the exhaust piping, can boost fuel mileage. A simple “weed burner” exhaust system modification, rerouting the exhaust underneath the truck before the differential, resulted in a fuel mileage increase from 6.0-6.2 mpg to 6.7 mpg. These straightforward modifications offer a cost-effective way to enhance fuel efficiency.
Further Enhancements: Delving Under the Hood
More extensive Mack E7 performance upgrades involve modifications under the hood. Installing a ported and Jet Hot coated exhaust manifold can further improve exhaust flow and reduce back pressure. Adding a FASS fuel system ensures a consistent and adequate fuel supply to the engine, crucial for optimal performance. Analyzing exhaust back pressure can determine if a larger turbocharger is necessary, potentially unlocking significant power gains.
Optimizing for Efficiency: Aiming for 9 MPG
While achieving 9 mpg in a Mack truck might seem ambitious, it’s attainable with a comprehensive approach. Combining performance upgrades with aerodynamic enhancements and optimized gearing can significantly improve fuel efficiency. Converting to a single axle with a liftable pusher axle and using super single tires can drastically reduce rolling resistance. These modifications, coupled with the aforementioned performance upgrades, can create a highly fuel-efficient Mack truck. Pittsburgh Power’s experience with glider kits, achieving 9+ mpg in Freightliner Coronado and Peterbilt 389 models, demonstrates the feasibility of this goal.
The Driver’s Role in Performance and Longevity
The driver plays a crucial role in maximizing performance and engine longevity. Regardless of horsepower and torque increases, responsible driving habits are essential. Monitoring the turbo boost gauge and pyrometer, avoiding lugging the engine on hard pulls, and adhering to proper maintenance schedules are vital for preventing mechanical issues. Ultimately, a well-maintained truck operated by a skilled driver will provide reliable service for years to come.
