1988 knock sensor tune
Melting Slicks
Joined: Oct 2000
Posts: 2,158
Likes: 9
From: N.E. WA
If you are referring to "knock counts", that is just an indication of the amount of times the knock was heard.
The only way that I know how to change the speedo reading is with a different set of gears that goes in the trans, but I have a ZF6.
The only way that I know how to change the speedo reading is with a different set of gears that goes in the trans, but I have a ZF6.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I have heard of people changing knock sensors and ESC modules to reduce the knock counts reported to the ECM.
Basically the knock sensor is a microphone and the ESC module filters out the noise and puts out a signal that goes to ground each time it detects what it thinks is a knock.
I don't know of any way to change the operation of the knock sensing inside the ECM. Maybe that was added in later ECMs (like in 1990 and later).
Basically the knock sensor is a microphone and the ESC module filters out the noise and puts out a signal that goes to ground each time it detects what it thinks is a knock.
I don't know of any way to change the operation of the knock sensing inside the ECM. Maybe that was added in later ECMs (like in 1990 and later).
Last edited by Cliff Harris; Aug 13, 2015 at 11:45 PM.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
When my tune was being done on my 383 , my tuner said he changed the sensitivity of my knock sensor because of excessive knock counts..I think he said he did it in one of the scalers in tunerpro ,but I don't know for sure...I have no knowledge of tuning and I'm just quoting what I was told by him...You can change the sensitivity of the knock sensor by a lesser amount just by changing the torque setting used to install the sensor, this I have done.....WW
Last edited by WW7; Aug 14, 2015 at 07:31 AM.
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