Car Engine + AM Radio @ 999 KHz...

[bradmann85]

my cb radio detects the spark plugs from other cars from as far as 20 feet away.

[CapnSONiC]

this is known as 999khz spark plug interference

[ak747]

lol i just found that out today it was pretty cool , felt like a i had a turbo

[tylermc4]

lol thats awsome.

how did you do that

i wanna do that with my system

[CharlesBabbageJR]

Just tune your car-stereo's tuner to 999 KHz frequency, AM band :)

(I suppose that also other AM-band frequencies might work)