Not sure if it’s good (it has a small gas/air ratio problem, nothing bad but well, annoying over 7500rpm if I shift too fast as it drowns the engine for a second. Will fix it later...), I heard it backfire a bunch of times, but tonight in a tunnel, I got the confirmation that it does spit flames too when I saw the flames suddenly brightening the tunnel lol.

Rotaries: they use so much fuel they even spit some in flames just for the sake of it lol