Good research. I'm betting the engine has rated at 277, but limited by the computer to not exceed the specifications of the transmission.The transmission is a 8f35, with a torque rating of 350 nm. 350 nm is equal to 258 ft lbs, and the Maverick is rated at 277 ft lbs, not sure how this is right, lol.
Furthermore, bumping to >300 ft/lbs without a modification to the transmission sounds like a bad idea, or at least expensive idea, to me.
Sponsored