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Knock Control Box?

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Old 08-13-10, 12:17 AM
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Visual Kei

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Knock Control Box?

Hey guys,

First time pulling the engine harness through the firewall on my current rebuild... thought I had all the plugs unhooked before I started tugging. Well I folded the knock control box circuit board in half. lol.

Is this needed to run my car safely? I have the last minute things to install/check before my car is ready to fire up for the first time again. Will it be fine running and driving around without this until I can source one?

I'll be in the break in miles so no boost and well under any real load and 3k rpms.

-Allen G.
Old 08-13-10, 12:58 PM
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rotorhead

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the s4 knock control system is pretty crude/ineffective by their own admission:



The s4 system used an analog system in that external box, and a knock sensor in the middle iron. Mazda redesigned the knock control logic and integrated it directly into the s5 T2 ECU while also relocating the sensor.
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Old 08-13-10, 01:13 PM
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Visual Kei

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Gotcha... well from what I'm reading it really never made a difference anyway due to other vibrations and "noise" that it was ineffective? I just want to be positive b/c there is no box plugged in at the moment and I'm finishing up my rebuild. I will hopefully have her started today and want to start putting some miles on it if it goes smoothly.

Thanks for the reply!

-Allen G.
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