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Originally Posted by FastOldGuy
Does the AEM give a realistic knock count. I know the SAFCII counts knock but it is just raw knock so it is not run through an algorhythm so its is useless so I was wonder is the AEM knock the same as you would see with a stock computer and a dataloger or is it just Raw knock. I would assume its not just raw knock.
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Realistic?
The EMS is infinitely configurable... you adjust what you would 'consider' a knock count. It's much better than relying on what the stock ECU's rendition of a 'knock count'.
You have a knock retard that kicks in once your knock parameters are exceeded. So it's more of a preventative measure when you compare it to what the stock ECU does.
NOW... this is entirely due to how accurately you have setup the knock calibration table... and more importantly... if the knock control is EVEN ON.
but back to what pjayp said... I almost never use the knock 'count'. I always check out the knock raw voltage.