Procharger Intercooled Mercruiser 7.4 mpi System

• The low compression of the 7.4 MPI makes it an excellent candidate for modern supercharging technology, producing large percentage power gains with relatively low boost levels.
• Increases crankshaft power form 340 hp to 500 hp (5 psi) or 560 hp (7 psi**)
• 100% complete, includes high-performance fuel pump and complete fuel system
• Installs quickly with no internal engine modifications
• 3-year (5 psi) or 1-year (7 psi) supercharger warranty
• Features M-1 ProCharger and AW-324 Intercooler
• Coolest charge air temperatures for maximum performance and engine reliability
• 560 hp package (7 psi) requires installation of larger fuel injectors and fuel pump upgrade