Every 10,000 miles or so, you should change the engine air filter in your Porsche 944 Turbo The air filter protects the air intake system, valves, pistons, cylinder walls, and engine oil from dust and debris that can be sucked in under normal operation The Turbo or 951 has a different air box system than the normally aspirated car, but theThis 1992 Porsche 964 Turbo S2 is one of just built for competing in the IMSA Carrera Cup racing series The S2 performance upgrades composing the S2 option package were installed primarily at Andial in Santa Ana, California They included more aggressive camshafts, a larger K27 turbocharger mated to a larger and more efficient intercooler, and various hardware to supportThe Porsche 911 Turbo 36 964 is the successor to the Turbo 33Although the Turbo variant for the 964 generation was initially launched in 1990 with the 33 liter engine inherited from its predecessor, the 930 Turbo, by 1993 Porsche had upgraded its Turbo model to the newer 36 liter platfo