I don't feel mine that much. There also sometimes seems to be a "flat" spot around 6K, so when it kicks back in I don't know if it's the regular acceleration or the V-boost kicking in. Either way I think I need my carbs cleaned. The servo's work because I can hear/see them on start up...
I do have a switch and when it's in the 3K position the acceleration is definitely more lively so i think it works...