John Bauer 
2018 Toyota Tacoma Double Cab SR5 4dr Double Cab 5.0 ft. SB (3.5L 6cyl 6A)
Atkinson cycle
 Be aware that the V6 Tacoma will shift frequently to try and stay in the Atkinson engine mode for gas efficiency.  When you step harder on the gas it will change to normal 4 cycle power when needed.