I hear ya. I just got my Vers. 4 from Wayne, timing and airfuel adjustments after the prior adjustments loss a bit of umpf, and man....... ! My response was just WOW Of course I can only get the 91oct but still, beefy as hell. I take it my great mpg that I was getting prior is gone but who cares? by the way Make Sure, you have the 93 in your tank, from what I hear, bad things happen if you dont. Glad you like it.