2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Super AFC - Knock Question

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Old Nov 4, 2006 | 07:53 AM
  #1  
dubulup's Avatar
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Super AFC - Knock Question

I seem to remember installing a super AFC on a 350Z and it having a dual knock sensor wiring?!?!

am I wrong, or does anyone have one that does have this?

I know it won't retard ignition, but having a monitor on both rotors could be a nice tuning tool.

TIA
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Old Nov 4, 2006 | 08:42 AM
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Turbo II's don't have a knock sensor, at least not an s4. Stock knock sensors often suck anyway. My buddy's Vr-4 used to datalog his stock knock sensor and it would read phantom knock pretty often.

IMO, if you're actually detonating it's too late anyway. Best tuning tool is a wideband. They are cheap these days, you can get an AEM UEGO gauge-type wideband for like $280, and that comes with absolutely everything you need.
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Old Nov 4, 2006 | 09:23 AM
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Last time I looked at my turboII engines they had a knock sensor and the FSM shows a knock sensor plus the parts fische show a knock sensor. What more can I say? Oh. Both S4 and S5 do.
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Old Nov 4, 2006 | 09:59 AM
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my fault. I'm talking out my *** again.

BUT I still don't think reading knock is going to help you all that much...

Last edited by arghx; Nov 4, 2006 at 10:12 AM.
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Old Nov 7, 2006 | 08:50 AM
  #5  
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I will be monitoring wide band O2, front rotor EGT, rear rotor EGT, and final EGT in the downpipe...and yes knock is a very important reading to know as well.

Bump...anyone use a Super AFC? if so, can you tell me if it is possible to monitor two knock readings?

TIA
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