I have a Mustang GT engine. As you can see from my profile I have done many mods. My problem is that the power is not what I feel I should have. The last dyno I ran showed 265 HP. I used to get 29 MPG (Imperial gallons), now I get 19 MPG. The engine runs well, but I wonder why it's so hard on gas and so gutless. I would expect around 300 - 310 RWHP. Any suggestions would be appreciated.