evoscan logger release
Oct 28, 2006, 02:50 PM
#211
Originally Posted by MalibuJack
If its so great, why doesn't it detect the earlier knock sum? All its seeing is the "high noise" value of what is usually knock, but isn't always.. Its using some sort of threshold before it registers.. and honestly, its not bad, and not the worst thing, but its not going to be as accurate as the knock sum in the ECU, since that is where you have to watch.. I'd bet you might be chasing a timing problem for quite some time if you were getting small amounts of knock that affected your timing..
The KS and OCT number are invaluable tools for getting an insight into the ECU's behavior.. Whether or not the ECU's behavior is detecting real knock or not, it is the brain.. And attenuating the signal before it hits the ECU is not the right solution.
The KS and OCT number are invaluable tools for getting an insight into the ECU's behavior.. Whether or not the ECU's behavior is detecting real knock or not, it is the brain.. And attenuating the signal before it hits the ECU is not the right solution.
It probably got the earlier KS, NJ just didnt plot it (not my log).
Hey, I use EVOScan and knock sums. I was just pointing out that the knock buffer is very accurate. Before EVOScan, I used the knock buffer on the user input of my Zeitronix and at the time, it WAS the best way to read knock.
****, Al logs just the knock voltage (unprocessed).
Oct 28, 2006, 02:52 PM
#212
Hey I log the knock voltage with ECU+ all the time too, and your right, it does log the voltage spikes, however not every spike is knock, and not every low threshold isn't.. ya know? The factory ECU breaks up the noise into frequency ranges, and the knock filters are the thresholds that determine at what point, and at what frequency, and at what RPM, that this is considered knock...
Oct 28, 2006, 02:57 PM
#213
Originally Posted by MalibuJack
Hey I log the knock voltage with ECU+ all the time too, and your right, it does log the voltage spikes, however not every spike is knock, and not every low threshold isn't.. ya know? The factory ECU breaks up the noise into frequency ranges, and the knock filters are the thresholds that determine at what point, and at what frequency, and at what RPM, that this is considered knock...
.I was just mentioning the knock buffers accuracy.
Last edited by Evo_Jay; Oct 28, 2006 at 03:03 PM.
Feb 14, 2007, 07:41 PM
#221
I have the PLX R-500 and tapped into the factory knock sensor and you can use headphones to listen for knock. I can definitely tell when it knocks using headphones. Not too many people tune this way anymore though. I dont do it anymore because of Evoscan and Mitsulogger.
