Phantom knock issue

[blackrosenova400]

Everything is completely stock exept a k&N filter and the turbo is a 14b instead of 13g. Its occuring under such light load I dont think either of these is the problem.

I installed 3g lifters, I do not hear any lifter ticking.

As for how tight the sensor is and its location, Ill verify I have it in the correct spot. I do not have my torque wrench or crow foot here, but I have tried testing with it at differant torque values and the problem still occurs.