981 Boxster/S Cayman/S DFI (3.4L/2.9L) IPD “Competition” Plenum: HP Gains 20 / Torque 18 – Requires Upgrade to 82mm TB

After a very extensive R & D program we are proud to launch the new 981 IPD 82mm Competition Plenums. We only offer “Competition” versions of the 981 Plenums which upgrades the factory 74mm throttle body with the larger 997 GT3 82mm throttle body. This combination has proven to be considerably more popular and deliver even more performance. This Competition version will work with both 3.4 “S” and 2.9 “Non-S” applications. Please specify 3.8, 3.4, or 2.9. **The 987.2 Competition 82mm IPD Plenum requires the additional purchase of the 997 GT3 82mm TB.**