knock sensor wiring

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ducman82
Master MS/Extra'er
Posts: 410
Joined: Fri Nov 04, 2011 8:41 am

knock sensor wiring

Post by ducman82 »

i will be adding 2 3-wire knock sensors (signal, ground, shield).

should i just run 2 separate cable pairs with shielding, or could i get away with 4 wire shielded to the MS box? or do you think that would interfere with each others signal?
81 Porsche 928. 5L 16v, MS3X CNP- full sequential
arran
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Posts: 617
Joined: Mon Oct 29, 2012 2:34 am
Location: Brisbane Australia
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Re: knock sensor wiring

Post by arran »

When I installed two knock sensors (RX8 knock sensors on RX7 series 6 rotor housings) I used two separate cables. I am seeing good results.
Can't speak for the other method. Given that you are dealing with very low level signals which will be amplified in the knock module it might be best to avoid as much as possible any opportunity for cross talk.
RX7 Series 2 13B Turbo. Megasquirt 3 with 3X Expander and V3 CPU. Firmware 1.4.1
Knock module, twin EGT, real time clock, WBO2, full sequential fuel and spark
http://web.aanet.com.au/arran
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