Car tuning is both an industry and a  scion  hobby, xb turningmeter  in which a car is modified in order to improve its performance and handling and improve the owner's driving style. As most cars leave the factory set up for average driver expectations and average conditions, tuning has become a turningmeter way to personalize the characteristics of the vehicle to the owner's preference. For example cars may be altered to provide better fuel economy, produce more power at high RPM or the ride comfort may xb be sacrificed to provide better handling turningmeter.

related to auto racing, although most  turningmeter performance cars never compete. Rather they are built for the xb pleasure of owning and driving such a vehicle. Another turningmeter major facet of tuning includes performance turningmeter modification to the car xb exterior turningmeter xb.

Engine tuning as of late has been marketed as the replacement xb of basic engine components with after-market versions that perform the exact same functions as those replaced while xb promising an increase in power output. Car tuners usually install new turbochargers, modify the car's engine cooling unit, replace xb the air filters but they could also install a more powerful engine on the cars they modify.

• suspension tuning involves modifying the springs, xb shock absorbers,  turningmeter sway bars, and other related components of a vehicle. Shorter springs offer an improved xb lowered look and a lower center of gravity. Stiffer shock absorber improve the dynamic weight shifting during  turningmeter cornering, xb and normally have shorter xb internals turningmeter to stop them from xb bottoming out when  turningmeter shorter springs are used. Stiffer sway bars reduce body roll during cornering, thus improving xb the grip that the inside tires have on the surface; this improves handling  turningmeter response. Other components that are turningmeter sometimes added are strut bars which improve the body stiffness, and help better maintain the proper suspension geometry xb  during cornering. On some cars turningmeter certain braces, anti-roll bars, etc, can be retro fitted to lower spec cars from sports models.

Body tuning involves adding or modifying spoilers and a body kit. Sometimes turningmeter this is done to improve the aerodynamic performance of a vehicle, as in the case of some wings or bumper canards, or, to lighten the vehicle through replacing bodywork components such as hoods and rear view mirrors with components made from lighter composites such as CRFP. Cornering speeds and adhesion can be improved through the generation of down force turningmeter.