997.1 Turbo competition plenum: 74mm

Power obsessed Turbo customers looking to push the motorsport envelope a little harder would best benefit from the larger 82mm ìCompetitionî IPD plenum fitted with a factory 997 GT3 82mm Porsche throttle body (sold separately)._x000B__x000B_The larger 82mm intake opening allows for even greater air flow to help optimize the more extreme mods such as larger turbos, intercoolers, Y Pipes and more aggressive software._x000B__x000B_This larger version Plenum is also designed to perform with the higher flowing IPD ìYî Pipe._x000B__x000B_GT3 82mm throttle body (part number RTB0082) needed for this plenum to work.