As long as no one makes fun of me for having an emf reader, I will report that I took a ride with my performance S, burned rubber, and never saw any reaction from the reader. In front and back seats it stayed under 1 mg. Held it low near feet, nothing. By comparison if I hold same device near back of my refrigerator I get reading of 150 mg. all around my house the ambient readings are around 1 mg. the reader was set to range of 1-200mg.