There should be no confusion. If the
ECU is throwing up a CEL that tells you its the Knock Sensor - then it most likely is. Stop driving around prentending it is not and blaming the Unichip or Tim Slacko.
Dude, if it not that hard to remove the knock sensor, why not just pull it out and have a good look at it to see if its cracked ? Jeez it not that hard.
Your other option if your not sure its the knock sensor is to go to a workshop like RMS,MMS,ASG and see if they have a spare lying around you can try out. Ring first would be a good idea.
If its costing you money on AFMs' - remove the APS CAI + K&N filter and go back to the standard Airbox with Dry paper filter.
Spend the money on the Knock Sensor and at least cleaning the AFM and get some reliability back or you WILL end up paying $2-6k for a replacement short block engine transplant!!!!
Can I be any clearer ??????