TiAL Turbo Inlet Elbows for Porsche 991.2 Carrera Base / S / 4S / T / GTSEngineered and assembled by TiAL for the Porsche 991. 2 Carrera S T GTS. Capable of a 50hp increase with the addition of these inlet elbows and TiAL inlet tube kit, which you can find here: Inlet Tube Kit If you're looking for a high quality inlet upgrade from a company that has a long history of upgrading Porsches, these are what you need. * Latest revision 3D printed. Includes both left and right, with vent provision. Designed for optimal air flow.