2010 Nissan GT-R Owner's Manual - Page 12

EXHAUST MUFFLER AND TRUNK CARPET Genuine GT-R special exhaust muffler and trunk carpet. Use only the genuine GT-R special exhaust muffler and trunk carpet. The GT-R exhaust system is designed to provide the maximum vehicle performance and to protect the vehicle from high exhaust gas temperatures. If non-genuine GT-R specification parts are used it is possible that the muffler or other exhaust system parts will deform and cause damage to the underbody. Non-genuine GT-R specification parts can also affect vehicle performance and possibly lead to turbocharger or engine damage. Also, do not remove the trunk carpet from the vehicle for any reason. The carpet insulates the vehicle interior from the heat of the muffler and from the noise of the transmission. Additions of non-genuine GT-R specific accessory exterior parts can change the air flow over and around the body. This can affect vehicle balance and cooling of various systems. For example, if the front bumper is modified, there is a possibility that brake cooling performance may be reduced due to the decrease of the air flow to the brake system. Use only GT-R special specification parts. performance which can increase the temperature in the engine compartment. This can affect the operation or damage parts located in the engine compartment. Front bumper The shape of the bumper helps pull air into the engine compartment through the front wheel housing to cool the radiator and brakes. Installing an aftermarket bumper may affect the air flow in the engine compartment and decrease the brake and engine cooling performance. An aftermarket bumper may also change vehicle balance by reducing front down force. Rear wing Installing an aftermarket rear wing may change the down force balance between front and rear of the vehicle. This can affect the handling characteristics of the vehicle and affect the operation of the ABS and VDC systems. EXTERIOR PARTS (spoiler, etc.) Do not modify exterior parts. The GT-R was developed using a special wind tunnel to help make sure the vehicle is aerodynamically balanced. Additionally, the wind tunnel was used to help make sure cool air flows to the brakes, radiator and other components. NOTICE Modifications to exterior parts may affect engine and transmission cooling GTR-4 GT-R Overview