Fit nicely into my car air vent control, I've disabled the vent control anyway hehe
http://i42.photobucket.com/albums/e346/papagoines/WLG7965/AfterConversion/Addons/Accessories/I110600261-DigitalVoltMeter.jpg
Knocking (also called pinking or pinging)—technically detonation—in internal combustion engines occurs when fuel/air mixture in the cylinder has been ignited by the spark plug and the smooth...