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MaxxECU online help


All four individual wheels speed from stock ABS into MaxxECU traction system.



Tacho (RPM).

Coolant temp (CLT).

Warning light (CEL).

Battery warning light.

Speedometer (vehicle speed).

Oil pressure light, see example below.

ABS + power steering works.

Odometer (needs vehicle speed sensors).

Oil pressure meter set to 12/20 when engine is started.


Not working/issues.

Oil pressure meter shows 3/4 all the time.


Confirmed to work models

Denso N3H8 18 881F, 279700 - 2286 (0022861).



MTune 1.129: Fix for some RX8 showing an ABS warning light.

Odometer/oil pressure meter update in MTune 1.127.

Official support in MTune 1.122.




Arrow explanation

Green (light): Working.

Green (dark): Working (but not controlled by CAN).

Blue: Not ECU controlled.

Orange: Partly controlled by MaxxECU.

Yellow: Turned off.






Oil Pressure warning light indication (using a wired analog pressure sensor)


1. Wire an oil pressure sensor to any available analog input channel and change to the appropriate calibration and settings.




2. Head over to Advanced --> User tables, user table X and enable an table. Give it a good name and select the Engine Oil Pressure as use as analog input function. Also right click on the axis, select change axis source and select your AIN channel with the oil pressure sensor and set sensor scaling.




3. Populate the table with values to suit your need, the Oil Pressure Warning light in dash WILL always light up when this table is above 0.


Note: If no CAN system oil pressure channel is selected in MTune, the oil pressure light in dash is OFF.



Wheel circumference must always be calibrated using an OEM CAN protocol


When we calibrate the wheel speeds from an OEM vehicle (to make an OEM CAN Protocol), we always use the stock wheel sizes, so to get correct wheel speeds within MaxxECU, you must calibrate your wheel dimensions, since they are used to show you the correct speed in MaxxECU.