mikey4410 Posted August 9, 2013 Posted August 9, 2013 http://www.ebay.co.uk/itm/Kit-Cars-Knock-Det-Alarm-Engine-Detonation-Detector-Visual-LED-Alarm-/190874332529?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2c70ff2d71 Quote
AdamB Posted August 9, 2013 Posted August 9, 2013 (edited) Can make your own for a few quid mate, you just need a Piezo element.Me and Grant where talking about this on another thread before. Edited August 9, 2013 by AdamB Quote
mikey4410 Posted August 10, 2013 Author Posted August 10, 2013 http://www.autospeed.com/cms/article.html?&A=0353 Quote
AdamB Posted August 11, 2013 Posted August 11, 2013 The problem is with that is you can't adjust the frequency, so you could end up picking up electrical interference etc. Quote
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