Originally Posted by TheOtherDave™
Hmm. If you're running your stock ECU, he must have grounded out the knock sensor lead. It's not the best solution IMO, for obvious reasons, but it'll work.
That doesn't work. The knock sensor creates its own voltage, so you need something to mimic the voltage created by normal engine operation.
In this case, I have no idea because vtec shouldn't be engaging with a CEL code 23.