Dakota Digital Universal Speedometer Signal Interface - SGI-5E
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Have you done an engine swap and your speedometer doesn't work any more? This device reads any electronic speed signal and calibrates it however you want, so you can take one speed signal and convert it to another electronic speedometer. There are many examples out there where this unit could be used to correct speedometer problems related to engine swaps and so on.
Here is Dakota Digital's description of this item:
The SGI-5E Universal Signal Interface Unit can handle nearly all of your electric speedometer signal conversion and calibration issues. The SGI-5E can recalibrate a 2,000 pulse per mile (ppm) through 250,000ppm electronic speedometer pulse rates, either up or down. The SGI-5E is great for adjusting aftermarket and OEM electric speedometers on vehicles after changing rear end gears, tire sizes, or drivetrain changes affecting the speedometer.
The SGI-5E is used as either a signal multiplier (up to 16X) or signal divider (up to 125X), making this unit extremely flexible for almost any application. While the SGI-5E is intended to correct only the signal feeding the electronic speedometer, in many cases where a speed signal is shared or on a databus, the SGI-5E can instead correct the signal feeding the engine and transmission computers. For even greater flexibility, the SGI-5E allows multiplication up to 16x, taking an 8,000 ppm signal and converting to a 128,000ppm output, and includes a regulated 5V sensor output, allowing use of the Dakota Digital SEN-01-5 speed sensor. A built-in LED display and pushbutton switches simplify setup and calibration.
**** If your vehicle is equipped with an anti-lock braking system (ABS), it is advised to ensure the signal reaching the ABS controller is not altered to eliminate any potential problems affecting control algorithms within the system. Some vehicles also utilize the output shaft speed to calculate transmission slip and lock-up. When a signal feeding the PCM is altered, this may cause the PCM to detect a constant slip. Consulting a service manual may be of assistance in determining the signal routing within the vehicle if the SGI-5 is decided to be used in a situation such as this. ***
Here are some typical applications:
- Recalibrate a high speed (32,000ppm–250,000ppm) signal for an OEM speedometer.
- Recalibrate a low speed (32,000ppm–4,000ppm) signal for an OEM or aftermarket speedometer or fuel injection computer.
- Convert a high-speed signal found on newer GM transmissions down to a low speed signal to run a speedometer, cruise control, or fuel injection computer.
- Convert an 8000ppm signal from an aftermarket signal generator to a 4000ppm or 2000ppm to run an OEM cruise control or fuel injection computer.
- Convert a 16000ppm signal from a VDO Hall Effect signal generator to an 8000ppm, 4000ppm, or 2000ppm to run a cruise control or fuel injection computer.
- Convert a 4000ppm signal from an OEM transmission speed sensor or ECM output to an 8000ppm signal for an aftermarket speedometer.
- Convert an 8000ppm or 16000 ppm signal up to a high-speed 128,000ppm signal for a newer fuel injection computer.
Do not use this unit to adjust a signal going to an anti-lock braking system.
Unit measures 4" x 2" x 1" and is designed to be mounted inside a vehicle.
FAQ: Will this work on my vehicle?
Unfortunately we cannot test every possible combination, but here is what you need to find out to see if this item will work for your application:
There must be a speedometer signal to feed into the box coming from a magnetic (2-wire) or hall effect (3-wire) sensor. The output can then be wired to any analog speedometer. The signal will NOT work with CAN BUS controlled gauges. If your speedometer is CAN BUS, there is most likely no way to use this box.