Just some thinking through today and preparation for a full engine/ECU map.
I have a spare circuit from the immobiliser, so decided to use that in map selection.
The immobiliser will select a non-running ECU map to prevent the engine starting (along with the other circuits it breaks) by taking the map selection line to open circuit.
A simple single pole single throw map switch on the Aux panel will allow selection between the remaining two maps. When open the dash switch selects the primary map so if the switch fails still normal operation, if the immobiliser fails I can't start the car anyway.
Can't see its a security risk even publishing this.
The wannabe hot-wire enthusiast would have to find the ECU map select input line or immobiliser wiring. Fiddling with the dash mounted map selector will not help other than possibly following the wire to the immobiliser.
The wannabe hot-wire enthusiast would have to find the ECU map select input line or immobiliser wiring. Fiddling with the dash mounted map selector will not help other than possibly following the wire to the immobiliser.
If someone is really going for the ECU or immobiliser wiring to hot wire the car they would be better served simply picking up the car and towing it, or a dashboard off scenario to re-wire, or potentially re-configure the ECU to ignore map switching - hopefully that doesn't sound like a joyrider mindset. (Famous last words)
( + Its mainly me and my Dad that reads this blog anyway )
Update - Installed here
( + Its mainly me and my Dad that reads this blog anyway )
Update - Installed here
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