Switzer P800 GT-R

The Brief

Street-Driven Performance. Built for Serious Power.

Our client brought this Nissan GT-R to HG Performance with only 1,000 miles on the odometer and a clear objective: find a reliable way to increase power without compromising the car’s street drivability.

The Switzer P800 Package was selected as the ideal balance between significant performance gains and everyday usability. Recognized as one of the most popular R35 GT-R tuning programs in the industry, the P800 package is designed around predictable, linear power delivery without the significant lag penalty associated with some high-output turbo upgrades.

The result is an approximately 800-horsepower road car capable of delivering supercar-level performance while remaining comfortable and composed enough to drive all day, every day.

The build was focused on creating a GT-R that could deliver serious performance on the road without turning the car into an uncomfortable or impractical machine.

What We Did

The foundation of the build was the Switzer P800 Package, combining upgraded turbochargers, improved airflow, intercooling, fuel system components, exhaust hardware, and engine management.

The GT-R received Switzer ball-bearing turbocharger upgrades along with high-pressure wastegate actuators, providing the foundation for the substantial increase in power.

Airflow was improved through a high-flow intake assembly and Switzer MONSTER intercoolers, helping the engine efficiently manage the increased performance demands.

The fuel system was upgraded with high-flow fuel injectors and Switzer fuel system upgrades, while a Switzer racing thermostat and housing were installed to support the performance-oriented setup.

For improved exhaust flow and sound, HG Performance installed Switzer high-flow test pipes (downpipes) together with a Switzer SS90 lightweight stainless-steel 90mm sport exhaust.

The exhaust system is constructed from high-quality 304 stainless steel, providing improved flow, an aggressive exhaust note, and a distinctive appearance. The combination was designed to complement the increased performance while retaining the character of a comfortable street car.

Engine management was completed with a Cobb AccessPort, allowing the upgraded hardware to work together as a complete performance package.

ESS Tuning VT-2 625 Supercharger System

The build also incorporated an ESS Tuning VT-2 625 Supercharger Kit, selected as another significant performance component within the project.

The VT-2 625 system includes a Vortech V3 Si-trim supercharger, a cast-aluminum ESS intake manifold with integrated velocity stacks optimized for boost, Bosch Motorsport 625-spec fuel injectors, and all required mounting brackets and hardware.

The system is managed through the ESS E-Flash reprogramming and diagnostic interface and incorporates a high-capacity liquid intercooler system.

The resulting setup produces approximately 7 psi of intercooled boost pressure, supported by a dyno-optimized performance calibration. The calibration also includes removal of the vehicle’s top-speed governor.

Parts Fitted

Switzer P800 Package

• Switzer ball-bearing turbocharger upgrades
• High-pressure wastegate actuators
• High-flow intake assembly
• Switzer MONSTER intercoolers
• Switzer high-flow test pipes / downpipes
• High-flow fuel injectors
• Switzer fuel system upgrades
• Switzer racing thermostat and housing
• Switzer SS90 lightweight stainless-steel 90mm sport exhaust
• 304 stainless-steel exhaust system
• Cobb AccessPort

ESS Tuning VT-2 625 Package

• ESS Tuning VT-2 625 Supercharger Kit
• Vortech V3 Si-trim supercharger
• ESS cast-aluminum intake manifold
• Integrated boost-optimized velocity stacks
• Bosch Motorsport 625-spec fuel injectors
• ESS mounting brackets and hardware
• ESS E-Flash reprogramming and diagnostic interface
• High-capacity liquid intercooler system
• Dyno-optimized performance tune
• Top-speed governor removal

The Result

The completed build transformed the GT-R into a serious street-performance machine, combining substantial power gains with the drivability and consistency required from a car intended to be driven regularly.

The Switzer P800 package delivered an additional 182 lb-ft of torque and 220.9 peak horsepower, dramatically increasing the performance of an already capable R35 GT-R.

The upgraded turbochargers, intercooling, intake, fuel system, exhaust, and engine management work together to provide smooth, predictable, and linear power delivery, allowing the car to remain comfortable and usable on the street.

The ESS Tuning VT-2 625 system further adds forced-induction capability through its Vortech V3 Si-trim supercharger, liquid intercooling, upgraded fuel system, and optimized engine calibration. The system produces approximately 7 psi of intercooled boost while maintaining consistent performance.

On the HG Performance Dyno Dynamics Dynamometer, the build achieved a peak gain of +149.2 horsepower and +78.6 lb-ft of torque from the ESS Tuning system.

The importance of maintaining consistent power was also demonstrated during real-world testing. Neema noted that he drove the car hard in 95-degree weather with low humidity, while the kit continued to maintain consistent power.

With the significant increase in horsepower and torque, braking performance becomes the next logical area for consideration. While the OEM brakes provide sufficient stopping power for normal street driving, extended high-performance use can lead to overheating due to the factory floating-caliper setup and lack of dedicated cooling ducts.

Ultimately, the build takes an already exceptional GT-R platform and pushes its performance significantly further while retaining the qualities that make it enjoyable on the street.

More power. More performance. Still built to drive.