'SoundRacer detects the small signals from the alternator on the 12V system in the car, it does not use ignition pulses. That is why it also works on diesel cars. Manual or automatic transmission
makes no difference for SoundRacer, it works on both types but of course the rpm response is different on automatic transmission cars with hydraulic torque converter, the rpm increases as soon as you
press the gas pedal.
A built in FM transmitter transfers the sounds on a selectable frequency to the car stereo system.'
'SoundRacer detects the small signals from the alternator on the 12V system in the car, it does not use ignition pulses. That is why it also works on diesel cars. Manual or automatic transmission makes no difference for SoundRacer, it works on both types but of course the rpm response is different on automatic transmission cars with hydraulic torque converter, the rpm increases as soon as you press the gas pedal.
A built in FM transmitter transfers the sounds on a selectable frequency to the car stereo system.'