I'm not familiar with the V&H. If they are true duals your MPG will go in the tank, probably 32. If the have a cross over, maybe 36-40. Not sure with a PCIII.

Just remeber that you cannot compare results from different Dyno's. HP and Torque can be made just about anywhere the tuner wants. Bottom line is ride it and you can tell if the performance is there. Performance and MPG like I currently have will only come from a good tuner.

Good Luck and let us know the results!