"Good Fight Man"

"Good Fight Man" basically means someone who is always trying to succeed, but for various reasons cannot. Although the term was also used for Jumbo Tsuruta, it was also the nickname of sumo wrestler, Kurama Tatsuya, who could not win even though he was on par with superior wrestlers. The term is also applied to job hunters who fail the final interview; so in short it is someone who often fails the final hurdle. In Noah the term has been applied to Yoshiki Inamura, and Shuhei Taniguchi by Takashi Sugiura. 

"Brum Brum"\"Bun Bun"

"Bun Bun" or "Brum Brum" is the sound of a motorbike revving that petrolhead Atsushi Kotoge from FULL THROTTLE uses. In Japanese onomatopoeic sound the word is pronounced and translated as "Bun Bun", but in English "Bun Bun" is slang for the word "Bunny", so it becomes "Brum Brum". 

The differences in spelling come from Western Roman and the Japanese Katakana alphabet, the Japanese have a "ru" and "n" sounds, but they do not have an "br", so the word changes to "bun bun" (on a personal note my favorite is "Do-den-ka-sha", which is the sound a train makes when travelling along tracks). 

"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)