That’s correct. it’s not 100% ideal, as it resulted in holes getting burned in the air filter sometimes, due to sparks coming all the way up from the gasifier. Also, since the mixing happened right there at that heat stove butterfly, so there was flammable fuel air mixture from that point, all the way into the engine. This is not ideal, but it worked. Also, I believe that sometimes if the engine backfired a tiny bit, then there was fire inside the air filter for a short time. There’s evidence of that, as the wires to the throttle body injectors are a bit melted.