bleunetizen

iTrader: (3)

Hi guys

It seems like the rom editor supports knock monitoring now?

In the logs from rom editor there's a field "knock strength".

Will this let me monitor knock value properly? I remember long time ago Jared from Uprev was saying that it was hard to get the knock value to human readable value, I wonder if that value is something you can rely on now?

djamps

iTrader: (1)

It's there, yes... can you rely on it? Probably if your engine is 100% stock. I toyed with it a little and it seems overly sensitive. Lots of activity where there's zero knock on my separate monitoring device. I still don't really know how useful this is -- nothing beats a set of headphones wired right into the sensor.

bleunetizen

iTrader: (3)

Thanks for the reply.

I guess I will need to test it myself as well but I do not have any other means of measuring knock on my car at the moment.

But if it was overly sensitive and shows high knock while in fact it is still safe, wouldnt that mean the ecu would run the high detonation table to save the engine as well?

Just curious, what kind of knock do you see from the log while it still shows zero on your other device? perhaps its 'safe' until certain amount of knock detected from the log?

thanks

djamps

iTrader: (1)

I don't know what's considered high knock. I just saw the values moving around. I know for a fact I've never ended up on the high det map -- that takes considerable knock. From what I gather, the ECU is always adjusting timing based on knock input and only switches map when things are REAL bad.

binder

iTrader: (8)

ya,haltech uses the oem sensor for knock detection. We have to make our own threshold maps and the stock sensor is noisy as heck.