THIS AUCTION IS FOR THE GREEN CIRCUIT BOARD ONLY, no parts included. (see my other auctions for the board with parts)

I designed this board for the 90-97 MX5, to be used with the DIY Autotune MS3 Pro module.  The Blue MS3 Pro Module is NOT included.

Usage is very simple, get the MS3 Pro Module, get this PCB and bolt the module to it.  Install inside the oem case, ultimately ending up with a “MSPNP-PRO”.

You just plug in the MS3 Pro module and install the board inside the stock ecu case.

For clarity, the pcb is made for a standard MS3 Pro module, thus no modifications are necessary to the MS3 Pro or its firmware.

V3.1 board specifications:

• usb connector
• pullup resistors for all in- and outputs
• proto area with gnd, 5V and 12V
• 3 stage shift light
• RS232 to TTL (for internal bluetooth)
• 90-93 active fuel pump circuit
• CAN port
• 2nd map sensor for baro correction (MPX-4250AP or the smd equivalent)
• choice between batch and sequential fuel (requires 2 extra wires on 90-93 non-California)
• choice between batch and sequential spark (requires extra wiring on all engines)

All unused in- and outputs can be brought out to the mazda connector in case you have extra functions.

All information is on the front and back silk to make it easier to do modifications. It’s just a matter of adding a resistor or a jumper.

AGAIN, you are buying the empty PCB, parts are not included.  See my other auctions for the board with parts.