AMS Alpha Performance Air Filter & CNC Aluminum AdaptorAt Pro Speed Racing we always try to find the best parts and brands on the market. AMS Performance is no exception. This intake includes their extremely efficient 4" Alpha Performance dry media air filter and is paired up with a custom CNC billet aluminum adaptor plate. Available for those who wish to retain the stock air box lid and plastic inlet. The OEM manufacturers spend a lot of time reducing turbo noise at the expense of horsepower. By letting