Description

The HKS VAC is a dedicated electronic module designed to safely and permanently remove the factory 180 km/h (112 mph) speed limiter on the Nissan GT-R R35 (models produced between 2007 and June 2016). As a non-invasive, add-on system, it works independently of the engine ECU. This allows the vehicle to reach its full aerodynamic and performance potential.

It also features a vehicle speed pulse output for aftermarket gauges and an optional ON/OFF switch. Together, these provide essential functionality for circuit driving and high-speed use.

Product Overview & Purpose

The GT-R, like many Japanese vehicles, is electronically limited to a maximum speed of 180 km/h. This limiter cuts fuel delivery at this threshold, preventing higher speeds regardless of the car’s actual capability.

The HKS VAC electronically disables this function by manipulating the vehicle speed signal. This allows the engine to continue producing power for track use, high-speed driving, or in regions without such restrictions. It is a required modification for any serious track-day preparation.

Product Highlights

🚫 Permanent Speed Limiter Removal
The primary function is to eliminate the 180 km/h speed governor. This enables the GT-R to accelerate to its natural top speed dictated by gearing, power, and aerodynamics. This is critical for safe track use where higher terminal speeds are achieved on long straights.

📈 Non-Invasive Installation & ECU Update Immunity

• Retrofit System: Installs as an add-on module without modifying the factory engine ECU. This ensures the stock ECU programming remains untouched.

• Future-Proof: Because it is separate from the ECU, the speed limiter defeat function remains active even if the vehicle’s ECU software is updated or flashed at a dealership, providing a permanent solution.

📊 Vehicle Speed Pulse Signal Output
Includes a light blue wire that outputs a standard 4-pulse vehicle speed signal. This allows for easy connection to aftermarket gauges, data loggers, or lap timers (such as a Circuit Attack counter) that require a speed input, eliminating the need for additional sensors.

🔌 Optional ON/OFF Switch
An included switch allows the driver to manually re-enable the factory speed limiter if desired (e.g., for valet mode). If permanent removal is the goal, the switch does not need to be installed.

📺 Accurate Speedometer Display
The system allows the factory digital speedometer and multi-function display to continue reading accurately above 180 km/h. This prevents the display from freezing or becoming inaccurate.

Technical Specifications & Critical Compatibility

• Product Name: VAC (Vehicle Access Controller) Type GT-R

• Model Code: 45002-AN008

• Compatibility: Nissan GT-R R35 (VR38DETT, December 2007 – June 2016 production ONLY). NOT compatible with July 2016 (2017 model) and later vehicles.

• Primary Function: Removes factory 180 km/h speed limiter.

• Additional Feature: 4-pulse vehicle speed signal output.

• Status: Discontinued Product. Not verified for compatibility with EGOIST edition models.

Performance Philosophy

• Goal: To provide a reliable, standalone electronic solution for disabling the artificial speed limiter, unlocking the vehicle’s full performance potential for sanctioned environments. The focus is on permanent functionality, accurate instrumentation, and seamless integration without altering core engine management.

• Focus: An essential performance and safety tool for track and high-speed driving. It is considered mandatory equipment for circuit use, ensuring consistent power delivery at high speeds, and is the trusted choice for owners who drive on unrestricted roads or private facilities.

Installation & Usage Notes

• 🔧 Professional Installation Recommended
  Installation requires tapping into the vehicle’s speed sensor wiring. Professional installation by a qualified technician is highly recommended to ensure correct signal identification, secure connections, and proper mounting.

• ⚠️ Critical Legal & Compatibility Disclaimer

  • Legal Use: The VAC is intended for use only on closed courses, racetracks, or in regions where public road speed limits are not in effect.

  • Compatibility Warning: DOES NOT FIT July 2016 and newer (2017+ Model Year) GT-Rs. Verify your vehicle’s production date before purchase.

  • Discontinued Product: Availability may be limited as this is a discontinued item.