"Engine Zenkai"

エンジン全開 ("Enjin Zenkai") is a phrase used by Atsushi Kotoge to describe both FULL THROTTLE (Atsushi Kotoge, Hajime Ohara & Seiki Yoshioka) and their special move of the three of them holding an opponent throat down on the bottom rope, with one applying pressure from the back and the other two side by side with their feet. 

In English the equivalent of "Engine open" would be "engines charged" or "engines firing" (to say an "Engine was open" in English would kind of roughly mean that the bonnet\hood would be open and it could be inspected). 

Atsushi Kotoge is a big motorcycle fan, having grown up around bikes in Osaka as his parents ran a bike repair store, and so it is natural that his obsession with them continues into the ring, as you can see from the picture above which was taken for a programme filmed in Kawasaki that they will be doing (picture credit, Noah.co.jp)