I shouldn't have mentioned the knock thing... It's supposition. It would have to be a very eccentric knock or noisy signal for that to occur and I think you'd know by then that something was very wrong.
How did you rewire the sensors? Did you follow the SOGI rewire?
You say the sensors are fine and have been replaced yet you say one is USDM and one JDM... But they're both new? I'm a bit confused here. How did you test them?
You could open up the ECU and look for bulging/leaking capacitors. The best bet would be to try to find one you could borrow or rent. Unfortunately, I gave away the box I had of half a dozen of them a year or two ago or I'd just send you one.
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