Mercury Racing 500 HP EFI Gen 6 3.8L Whipple Supercharger System - TBI Version

MERCURY RACING 500 HP EFI
GEN 6 3.8L WHIPPLE SUPERCHARGER SYSTEM

The Mercury Racing 500 HP EFI Gen 6 3.8L Whipple Supercharger System - TBI Version is designed for compatible 500 HP EFI marine engine applications that need a complete bolt-on supercharger package with intercooled boost, ECM recalibration, upgraded belt-drive components, and supporting fuel system hardware.

Now featuring the Gen 6 3.8L supercharger, this system is engineered for strong airflow capacity, instant boost response, cooler discharge temperatures, and broad torque delivery across the RPM range. The Whipple twin-screw supercharger can generate boost quickly without the lag associated with centrifugal-style superchargers, giving the boat stronger acceleration, improved planing performance, better cruising power, and increased top-end potential when the complete setup supports it.

The TBI version uses throttle body injection with a large integrated cupronickel intercooler package. The throttle body injection layout helps create an additional charge-cooling effect as fuel is introduced ahead of the intake path, supporting lower inlet temperatures, improved power, and added reliability in the correct application.

Whipple includes ECM recalibration to support complete engine management, including fuel, spark, and detonation protection. The system is designed to work with the compatible factory ECM while retaining strong idle, starting, and driveability when properly installed and calibrated.

This system also includes key supporting components such as a billet 10-rib supercharger belt system, billet 6-rib adjustable idler system for accessories, Aeromotive marine fuel pump, adjustable fuel pressure regulator, stainless water pump delete kit, billet fuel/water separator, fuel cooler, and high-flow fuel injectors.

Stage 1 is the base supercharger system and features the original 8" wide x 2.5" thick cupronickel intercooler core with 6-7 psi of boost. Stage 2 builds on Stage 1 with the massive MOAC intercooler core featuring an extra 1" of core depth, dual inlet/outlet water flow, and a .125" smaller supercharger pulley for approximately 1 psi more boost.

Major kit components are pre-assembled to support a cleaner installation, and the system is available in Hi-Performance Blue finish, polished finish, custom color, and other finish options. Finish and stage selections should be chosen based on the customer's engine package, build goals, available clearance, and complete installation requirements.

Stage Options

• Stage 1: Base supercharger system with 8" wide x 2.5" thick cupronickel intercooler core and 6-7 psi of boost
• Stage 2: Adds the MOAC intercooler core with extra core depth, dual inlet/outlet water flow, and a .125" smaller supercharger pulley for approximately 1 psi more boost

Key Features

• Gen 6 3.8L Whipple twin-screw supercharger system
• Designed for compatible Mercury Racing 500 HP EFI applications
• Throttle body injection version
• Up to 60% horsepower increase in supported applications
• Reprogrammed factory ECM for fuel, spark, and detonation protection
• Billet 10-rib supercharger belt system
• Billet 6-rib adjustable idler system for accessories
• Aeromotive marine fuel pump and adjustable fuel pressure regulator
• Billet fuel/water separator and fuel cooler
• High-flow fuel injectors
• Stainless water pump delete kit
• Cupronickel intercooler technology for marine corrosion resistance
• Stage 2 MOAC intercooler option for increased cooling capacity and water flow
• Instant boost response with no centrifugal-style lag
• Flat torque curve across a wide RPM range
• Self-contained supercharger oiling system
• Designed for installation without internal engine modifications
• Major kit components are pre-assembled for easier installation
• Available with Hi-Performance Blue, polished, custom color, and other finish options

Application note: Verify engine model, ECM compatibility, stage selection, finish selection, fuel system requirements, boost configuration, intercooler configuration, available engine-compartment clearance, and complete installation requirements before ordering. Final power results can vary based on engine condition, boat setup, prop selection, fuel quality, calibration, operating environment, and installation.