Originally Posted by joro2077
@Ænema- I'll check again, you dont think its DVs? Because I already bought AWE DVs. I had FMIC for more then a year now and everything was fine on JB4 G5+meth (im planning on stacking both tunes but for now JB4 is off the car cause I have some rattle and going for warranty issues soon) thanks for reply
It certainly could be the DVs. If you've already got the AWE DVs then just swap them in and see if you stop throwing the code. If you're still throwing an under boost code with new DVs then that at least eliminates one leak source.