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GT-R tuners aren't getting a 1000hp – yet – but one of Japan's largest aftermarket firms has started the wave, and to good effect. HKS will begin offering its GT570 kit to consumers in Japan later this year (no word on U.S. distribution) and as it's name implies, output is getting close to the 600 hp mark. The package includes new wastegate actuators for the stock turbos and an electronic boost controller, along with aluminum intercooler piping, silicon hose couplers and straight pipes that replace the stock catalytic converters, reducing back pressure, but negating the GT-R's road-legal status.
Features:
All required parts to improve performance of R35 Gt-R in a package. By installation of this package, performance is greatly improved to 570PS. By reduced exhaust resistance, boost increasing characteristics is improved. EVC with base data and reinforced actuator prevents boost drop. For high boost, intercooler hoses are fully replaced with aluminium pipes.
 
562 hp and 540 lb.-ft. of torque at the wheels Remarks
- It cannot be used with other manufacturers' ECUs and air cleaners.
- Factory boost setting of actuator is at 90-95kPa. (In order to change setting of actuator, EVC data also needs to be changed.)
- Boost pressure needs to be less than 120kPa. (Fuel injection volume will not be enough.)
- Although EVC has the base data, it is recommended to adjust for each individual vehicle. - Installation time : About 1.5 - 2 days
- Hand tools such as "Cab click" will help replacement job of actuators.
- For removal of primary catalytic converter, extension (600 - 700mm) and 14mm universal socket will help.
* As catalytic converters will be removed, it is only for motorsport use.
* Since it is for motorsport purpose, there is no warranty for failure of engine or other components.
* It is not road legal as catalytic converters will be removed.
   
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