IPD 981 Cayman/Boxster Non-S 2.7L 82mm Competition Plenum ('13-'16) (81482-2.7) 1532 Replace the small muffler behind

Replace the small muffler behind the primary muffler in the BORLA(r) "S-Type" system with Polyphonic Harmonizer 60680 to attain the "ATAK(r)" sound level (louder than "S-Type")

**50-state compliance currently for 2008-2014 model years

Utilizes a superior carbon/resin ratio for enhanced stiffness and strength

Sport-Comp II

Tested +9 TQ and +6 WHP

IPD 981 Cayman/Boxster Non-S 2.7L 82mm Competition Plenum ('13-'16) (81482-2.7) 1532 Replace the small muffler behindRequires use of GT3 82mm Throttle Body (Sold Separately) After a very extensive R&D program we launched the 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"