Knock Sensor for ODB1?

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Knock Sensor for ODB1?

highlift Fri Aug 27, 2010 3:21 pm

I've got neptune running quite well in my D15B. Street tuned with I/H/E but I'm about to go high compression, big cam and ITBs. Is there a knock sensor anyone could recommend that I could use that can integrate with Neptune that I would be able to get some logged numbers? I've seen some analog setups but I'm after a loggable solution. Is it possible to adopt one from a ODB2 vehicle?

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HRTuning Fri Aug 27, 2010 3:40 pm

Anything that outputs 0-5v can be used and logged right in the software.

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highlift Fri Aug 27, 2010 3:49 pm

Coooool. =) Appreciate it mate

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HRTuning Fri Aug 27, 2010 4:27 pm

No problem. Smile

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cyanide Fri Sep 24, 2010 6:12 pm

Can you give an example of a knock sensor that Neptune will support for sure? I'm very interested in this.

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HRTuning Fri Sep 24, 2010 6:30 pm

No, I've never used one, but anything with an analog 0-5v output can be datalogged on the extra analog inputs through NepTune.

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clyde Tue Nov 09, 2010 12:14 pm

i thought i would like to share.

here's what i use.



http://www.phormula.co.uk/ProTuningSolution.aspx

the more i use Neptune, the more i'm in love! it's an awesome piece of art James! Very Happy

the KS-4 unit(0-5volt out) plug into D12 (EGR lift input). I still have a long way to go while tuning but now am not scared raising my ignition maps and "tune to knock" Twisted Evil


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HRTuning Tue Nov 09, 2010 3:38 pm

Awesome Very Happy

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rdc Thu Mar 03, 2011 2:09 pm

There was a knock circuit that was made popular by the Megasquirt boys.
Built it and it works. I think somebody even sells them for like 20 bucks.

Here you go
http://www.viatrack.ca/

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hjdanzi Wed Jun 15, 2011 7:34 pm

I wouldnt recommend the use of a knock sensor, if it has the ability to retard timing. I would use it just to datalog... especially when you tune for MBT. If you tune for MBT and read the plugs there is no use in a knock sensor that retards timing... especially if you are using big cams or forged pistons. They are louder than the stock ones and would make the knock sensor show knocking when there is not. IF you set the knock sensor to really work, like using for example the stock knock sensor in a prelude... with forged pistons... you will find out that timing will be retarded when its not knock, but just forged pistons noice.

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Muckman Tue Sep 27, 2011 6:35 pm

The Phormula/KS-4 kit is absurdly expensive.
The KnockSense kit is really simple, cheap and popular with MegaSquirt users.

JR correct me if I'm but it seems the problem with the stock knock sensor lies around the knock control unit (knock board) which is not re-programmable. The stock knock sensor is no longer accurate to aftermarket engines therefor the signal it generates will contain alot of "noise".

What if the knock input was sourced from a 3rd party unit such as the KnockSense? The KnockSense uses the Bosch knock sensor, which according to BigMoose's research has the flatest waveform. The KnockSense controller filters out engine noise based on engine bore etc. With the 5v output I can easily log knock like clyde is doing but the ECU cant retard timing. If I had a simple Knock Retard table to retart ignition x.x* value at x knock volts that would be adequate. ie at 3v knock retard 1*, 4v knock retard 2*, 5v knock retard 3* etc. Something simple.

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HRTuning Tue Sep 27, 2011 7:41 pm

So it would only retard momentarily when knock was seen?

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Muckman Thu Sep 29, 2011 10:03 pm

Yes, momentary retard would be fine for me. Im looking for a safety net rather than a crutch. Or a boost cut, rev limit, or CEL option.
I like to keep things simple. What are your thoughts?

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HRTuning Fri Sep 30, 2011 3:58 pm

Something to consider.

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Dellas Fri Sep 30, 2011 6:19 pm

That would be awsome

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