Mishimoto 15-20 BMW F8X M3/M4 Performance Air-to-Water Intercooler Power Pack - Mineral Gray - MMB-F80-PPCMG fits_2005-2007`Porsche`Boxster If you use grippier tires

If you use grippier tires and an engine with more torque

as well as offer improved aerodynamics

you can provide a powerful tone on the street

This system can be used with most aftermarket axle-back exhaust systems or with the factory tailpipe to tame the exhaust tone

8 Liter SM420

Mishimoto 15-20 BMW F8X M3/M4 Performance Air-to-Water Intercooler Power Pack - Mineral Gray - MMB-F80-PPCMG fits_2005-2007`Porsche`Boxster If you use grippier tiresAvailable in 7 BMW specific colors, your go fast parts in the engine bay can now match the exterior beauty of your F8X. The beauty is more than just skin deep too. Our improved core design features a bar and plate core with a 29% increase in core volume, as well as a unique single pass coolant flow layout for optimal heat transfer. Combined with our 16% increase in flow through the core we were able to record a 12F temperature drop in intake air