IPD Plenums 981 DFI Cayman S / GTS (3.4L) Competition Plenum EBC slight imperfections or weave pattern

slight imperfections or weave pattern variances can be expected

and heat fatigue

Optional -10 ORB fitting pre-filter

Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place

high fin density

IPD Plenums 981 DFI Cayman S / GTS (3.4L) Competition Plenum EBC slight imperfections or weave patternAfter 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. 4L "S" and 2. 9L "Non S" applications. The 981 intake is nearly