Search man its been discussed, If you need more power get an f150. What your are asking is kind of a contradiction, if you want more power your mpgs go down the drain, if you want more mpgs your power goes down the drain. If you want more throttle response, do the throttle cable mod. Clicky--->
Throttle Cable Mod Other than that search, If you have money super charge it, or drop a 5.0 in it.