Project S2000 Part 5: Keeping it From Overheating

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ARK Design makes a sensor sandwich adapter that goes between the engine block and the oil filter.  Simply install the sandwich adapter with the oil pressure and temperature sensors installed, hook those up to the MFD2, and voila!  Oil pressure and temp displayed nicely on the MFD2 in one gauge.  No having to mix-and-match various fittings to tee in the sensors and no mounting or running wiring for two gauges in the cockpit (power, ground, etc).

Project Honda S2000 Koyo Radiator ARK MFD2
To bolt the sensor adapter to the stock oil-coolant heat exchanger, you’ll need a 26mm socket.  Then just tighten the oil filter like usual.

The MFD2 has two analog and four digital display options.  Analog shows one or two parameters.  Digital can show one, two, four, or eight parameters.  For all the display options, there’s peak recall.  One very cool feature of the MFD2 is the warning system.  For each parameter, you can set a warning value.  When that value is hit, an audible tone goes off and a warning light flashes for that parameter.  There’s an option where the display will switch from whichever mode it’s in to only showing the parameter that tripped the warning.

Project Honda S2000 Koyo Radiator ARK MFD2
Here the MFD2 is installed using a mounting bracket from Modifry.

For the parameter readings pulled from the OBDII port, the speed of those signals various by parameter.  The parameters read also depend on the vehicle.  The response speeds of the optional sensors (pressure and temp) are extremely fast.  On our generation S2000, it does not read the throttle position or injector duty cycle.  We hooked it up to a friend’s WRX, and it does read those (and boost too!).

Of note, to get the best boost/vacuum readings, the optional sensor is required.  Reading the factory sensors through the ECU has a relatively low sample rate; we’d guesstimate roughly 3-4hz which is really slow.  With the optional sensor that plugs straight into the MFD2, it’s practically instantaneous.

Project Honda S2000 Koyo Radiator ARK MFD2

 

Below are a couple videos showing the the MFD2 in real-time operation.  On the screen showing 8 parameters, you can see how the sample rate of the optional oil pressure sensor is very fast, the RPM signal coming from the ECU is somewhat fast, and the boost/vacuum from the ECU is relatively slow.

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