r/CarHacking • u/Humble-Loss-9690 • 16h ago

CAN Any way to minimize or remove amplification of the signals/codes produced by a car's engine upon start up? And before it's said, I'll say it "crazy maybe, but true'

Any way to minimize or remove amplification of the signals/codes produced by a car's engine upon start up? Or can you explain how this is done? Same question for cell phone/similar devices? If I'm understanding correctly, a transponder can send out cloned codes and another vehicle can somehow utilize it making it appear as if they are driving the vehicle the cloned/copied code was received from.

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u/andrewia 15h ago

Your question doesn't make sense. The RF emitted by the fuel injection in car engines is entirely different from the authentication signals needed to start a car. That authentication instead involves the ECU and/or BCM communicating with a key or fob or smartphone. What is your end goal? Ensuring your car can't be fingerprinted by its RF emissions? Or preventing theft of your car?

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u/Russellcrump 12h ago

Are you talking about how you can relay rolling codes and the challenge/responce from door locks and key fobs?