hi,
just want to comment on this, my pfc used to "de-tune" itself after 4 months, this happened twice, I have to go back to load the tuning back. It sprogressive as well, slowly the knock values increases until the engine light keeps coming on, it got so bad at a point that the vehicle has to be towed, burning too rich, shooting out black smoke, won't even idle
Might only be a defect on my pfc. but nayways I swapped to wolf. and so far no problem.