Put this little circuit board in your MegaSquirt-III to unlock its full potential! This board installs in the MS3 case with no soldering; just connect it with the included ribbon cables.

Install the MS3X board to add this whole list of inputs and outputs to the MS3 ECU:

• 8 Sequential fuel injection outputs. Each can drive a high impedance injector, and unused injection outputs can be put to other purposes.
• 8 Logic level 5 volt ignition outputs. Works with many types of ignition modules and coils, including LSx coils. Requires external module or coils with internal ignitors.
• 6 Medium current outputs. Use for 2 stage progressive nitrous, boost control, tach output, 3 wire idle speed control, general purpose PWM or relay control, or many other potential applications.
• 3 Analog inputs. Use for an external MAP sensor, second O2 sensor, fuel pressure, accelerometer, or general data logging.
• 4 Switch inputs. Can be used to start data logging, arm a nitrous system, switch tables, launch control, VSS input (with external conditioner), and more.
• 1 Cam sensor input. Can be used with VR, Hall, or optical sensors.

The MS3X has all these circuits on it, just ready for you to wire up and use them. No mod kits, no setting up custom special order ECUs, just plug in and enable it in TunerStudio. The MS3X is intended for use with the MS3 daughter card only.

MPX4250AP MAP Sensor Standard 2.5 bar Map Sensor used in MegaSquirt PCB 2.2/3.0/3.57 ECUs.

Good for 21-22psi of boost, or for NA usage in non-boosted applications.