Replace exhaust system for better performance, but not all parts need ... Anywhere up to 10 percent — and more on turbo cars, where boost may be a little higher and/or come up faster.

This time, the subject of its attention is the new-for-2007 Porsche 911 Turbo ... exhaust system up to a throttle-controlled stainless steel sport exhaust system which optimizes performance ...

Mansory's P9LM EVO 900 project has a custom body kit, a reworked interior, and fresh wheels. Production is capped at ten ...

The biggest fundamental issue with the turbocharger is that it requires exhaust gas to power it; thus, turbo lag, aka lack of ...

Aftermarket tuners are giving extensive support to the GR Yaris. The company Tom's latest build is an impressive example of ...

Porsche has been tight-lipped about specifics, but the current 911 Turbo has a twin-turbo 3.7-liter flat-six developing 572 ...

The refreshed 992.2-generation Porsche 911 Turbo ... exhaust (right, below) and the optional Sport Exhaust (left, below). Some parts of a new rear fascia can also be seen on both cars, though ...