Скачать или смотреть Flat Response Knock Sensors - Not all are created equal.

A guy named Kurt made a post (http://www.efi101.com/forum/viewtopic...) detailing resonant response and flat response knock sensors, how to detect knock (ping, detonation, etc) and setup the AEM EMS optimally for knock detection/correction. Following his post, I installed a flat-response knock sensor on my engine.

The one I bought originally was a cheapo generic sensor from eBay and it worked okay but had too much noise on it. After a quick discussion with Kurt on the AEM forum, we came to the conclusion that the knock sensor was grounded to the block. This is horrible, because wiring that sensor to the "sensor ground" on the EMS will contaminate all my sensor readings!

I then ordered the authentic Bosch sensor (part# 0 261 231 006). I found that it was exactly what I needed and the best part was that the pigtail I bought with the generic sensor fit on the Bosch one!

If you are not aware of "chassis ground" vs. "sensor ground" when handling automotive electrical systems, read this article from the megasquirt website regarding grounding and it'll all be clear: http://www.msextra.com/doc/general/gr...