Loss of Engine Power

Hey everyone. I just got my Tundra back from the shop after having the entire front end of the motor rebuilt and I don't have any power. When i got it from the dealer you could burn rubber without trying and now I have to floor it to get going. Does anyone have any ideas?

obviously something was not reassembled correctly. It could be a disconnected sensor, incorrect cam or ignition timing etc.
Take it back to the shop and have them fix it. Be nice, but forceful. Refuse to accept it back until it performs as you expect.