The SpeedM8 DATA delimiter will remove the 112 MPH factory programmed road speed limit which is standard to all Japanese imported Nissan Skyline 350GT models.
Please note, this product does not convert the vehicles speedometer to MPH. We offer a seperate speedometer reprogramming service for this vehicle, please click here for details.
Overview And Installation
The Engine Control Unit on the Japanese home market Nissan Skyline 350GT is pre programmed with a road speed limit of approximately 112 MPH, although with most converted speedometers, this will appear to take effect when the speedometer is reading around 120MPH. At this speed, engine performance is restricted to inhibit further acceleration.
Speed information is supplied to the ECU via the vehicles CAN (Controller Area Network) system, which can be found at the ECU as a twisted pair of wires. The CAN system carries a vast amount of vehicle data between controllers, some of which is used to enforce the road speed limit.
The SpeedM8-DATA delimiter works by analysing the vehicle data stream and re-writing the appropriate information to the ECU so as to defeat the factory limit function. This simply allows the vehicle to achieve the maximum designed road speed without restriction, the delimiter does not enhance normal engine performance in any way.
The delimiter is installed directly to the wiring at the ECU, behind the dash area on the passenger side of the vehicle. The delimiter wiring loom has pre-bulleted CAN wire connections fitted and is supplied with bullet connectors for installation to the cut ends of the vehicle CAN Bus wiring. The only other connections required are to a 12v+ power supply and to a good ground point.
The SpeedM8-DATA features CAN activity detection and will automatically switch off when vehicle CAN activity has ceased.
Full installation instructions are supplied with the unit, average installation time is approximately 40 minutes. It is advisable to use a set of high quality, ratchet type crimpers to install the bullet connectors to the vehicle CAN wires and soldered connections for the power wiring.
Wiring Details
- White / Blue - CAN HI & CAN LO (LOOM)
- White / Green - CAN HI & CAN LO (ECU)
- Red - 12V+ Supply
- Black - 0V Ground
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