ECU Switches
MyECU has four switches within the unit that can be set by the user to modify it's behaviour.
These are ...
- SW1 - Disable closed loop operation.
Setting this to on will make MyECU operate
open loop in a similar way as the OEM ECU. The oxygen input is completely
ignored. If you do not have an oxygen sensor fitted this switch should
be on.
- SW2 - Disable barometeric sensors.
Setting this to on will cause MyECU to ignore oil
temperature, air temperature and air pressure inputs. This switch
is normally off but could be turned on if one or more of the sensors
failed. Cold starts will be affected as no choking will be performed.
Closed loop operation with this switch on should work OK except in
extremes of altitude and temperature as closed loop operation with
only adjust the map by a small amount.
- SW3 - (My16M/My15M) Disable Throttle/RPM tachometer display.
With this off, the tachometer is
a multifunction display alternatively showing RPM and throttle position.
When on, the tachometer will just display RPM.
- SW4 - unused, leave off.
Tachometer (My16M, My15M)
The tacho is now a multi
purpose display. Currently the instrument alternates between RPM and throttle
position. When the tacho points to 1000 RPM, when showing throttle, the throttle is on Row 0 of the map.
2000 RPM is Row 1 etc. This is an aid to tuning as without some form of throttle display it is difficult
to know with part of the map the engine is operating in.
SW3 as mentioned above will disable this feature.
Communication
The MyECU ships with a Bluetooth dongle for interfacing with the Android Optimiser App.
The dongle uses an RJ45 connector that plugs into the MyECU's RJ45 socket.
It is NOT a network connection but rather a proprietry TTL serial implememtaion.
The dongle only needs to be used when using the App.