Mark, mine will shoot a lower-than-usual power string if I accidentally overfill the gun. For example, if I fill to 250 bar, the entire string is around 20fps lower than normal. It is just as consistent, but lower power. The "breaking point" for all Air Wolf's that I have tested is 230 bar. Fill over that, and things get a little wonky. The gun will return to its "normal self" when you fill it again. Some of my other (non-electronic) guns do this same thing. If I fill my .22 Matador over 200 bar, it shoots half the string at 950fps, and the other half at 880fps. If I fill it to 195 bar, I get 50 shots at 910-920.
So - back to the Air Wolf - I usually fill to 230 bar - let the gun settle to 220 bar, and enjoy my 90 very consistent shots down to 130 bar.