The 3.2 liter 986 Boxster S Plenum provides impressive power gains throughout the entire power band, especially in the midrange where we enjoy it most. The 74mm Boxster S IPD Plenum and upgraded 74mm (from 68mm) throttle body package is recommended for Boxster S enthusiasts looking for considerable performance gains. Performance gains can be felt throughout the entire power band making the Boxster driving experience even more visceral. The IPD Boxster S Plenum will provides the most impressive power gains of any engine upgrade available and will truly transform your Boxster driving experience. The 74mm IPD Plenum is the best Boxster S modification on the market and will further compliment other mods such as exhaust, software and beyond.
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