Engine/ECU Rule Interpretation.

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9.1.1 H4 C.
The stock ECU shall be used. The ECU fuel map may be changed.
Devices that modify inputs to the ECU (e.g., Power Commander)
may be used. Stand-alone after market ECUs are not permitted.

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Please tell me if this is legal based on the above rule.

1. I pick up an engine from a 1000cc motorcycle, but I do not take all the electronics with it.
All I take is: engine, harness, ecu, and whatever is required to run it.

2. I leave some of the electronics, sensors in the the motorcycle.
a. some of the sensors may be: traction control, abs.

3. I flash the ECU (fuel map).

4. I modify the inputs to the ECU using a device (my own build device, no Power Commander).

Am I still in FB?

P.S. I know this has been talked about before, but time has passed by since then and I want to know if something is up in the air that would render my work worthless.

Sure sounds legal..

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4. I modify the inputs to the ECU using a device (my own build device, no Power Commander).

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Assuming your device(s) only intercept the signals and modify them, you are doing exactly what the Power Commander, etc. does.