Silly things

you must be talking about the new advanced product they have called the "cyclone".
this device is similar to the "hiclone" (with all the advantages of the huge fuel savings) but also has a magnetic band which will collect any small/medium particles of metal trying to enter via the air intake. i must admit, the boys at hiclone have been quick to take advantage of a recent drama involving a hiclone (which saved the day ) but hey, some of the best inventions born by accidents?
anyway, the cyclone has 2 X leads attached, one goes to the battery, which supplies a small current to power the magnet.
now here comes the clever part, the power supply runs through a tiny reverse diode anti-capacitance frequency modulator detector. in laymans language, it will detect any change in current caused by metals attracted by the magnetic force and is able to either warn the driver via a dashboard warning lamp or be connected direct to the ignition to stop the vehicle. this would prevent further damage being caused before the offending material can be removed.
i can't wait to get my hands on one.

"now here comes the clever part, the power supply runs through a tiny reverse diode anti-capacitance frequency modulator detector".

Unless it's been lost in translation, this is basically technical bull.
What a load of codswallap ! .