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?? how2dealWITHwith knock sensor and use MegajoltE ??
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Post ?? how2dealWITHwith knock sensor and use MegajoltE ?? 
OK. Have done a search knock sensor and hit 217 pages of sensor stuff - looks like there is also a sensor forum I should look at. I am looking at doing an EDIS MegajoltE on a knock sensor equipped engine Subaru EA82T from the mid 80's L Series.

I have monitored the output of the knock sensor to know that it does work, just not very often which may be due to the fuel LPG rather than the driving and 12psi of boost Smile

IT had only occurred to me that I would need to investigate the Megajolt regarding knock sensing before I dream any further for my turbo application anyway.

Can the Megajolt E be rigged to knock sensor one wire or two wire ?
What have others done to deal with knock sesnored engines ?

thanks Smile


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looking at EDIS on a flat four Subaru family EA81 and EA82
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Don't seem to be many responses on here right now. Sad
I guess Brent is busy?
Spam in the General Discussion area too! So not sure how active this place is anymore. Sad

But perhaps I can help?
From what I know. Knock sensors feedback a voltage dependent on the amount of knock.
This a value 0-5v.

Megajolt can be configured to read 0-5v via the aux input.
I think you need to make a hardware change. It's in the 'manual'.
But with that done, you should be able to retard the ignition depending on the voltage value read.

Hope that helps.

Jason.


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www.RetroFiesta.co.uk
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Hi,

The Megajolt can *receive* an input from a knock sensing system, if it can output a voltage proportional to the knock. See the auxiliary map table in the wiki for a way to override the ignition map - typically used to retard the ignition.

Look at the J&S Safeguard system for a universal system that can read engine knock.

Hope that helps, let us know if we can help further.


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Brent Picasso
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