It's mounted to (and is external to) the plastic 'pipe' between the air cleaner and the throttle body. Big hose runs to it. And a smaller vacuum hose. The part that the hoses attach to is called "nipple." This part attaches to "bushing" which attaches to the 'pipe.' The flame trap itself mounts in the nipple between it and the bushing. It's just a white plastic disc with lots of holes. Detach nipple from bushing by turning a quarter turn or so. Then you can see the condition of the flame trap.

In order to see any of this, you need to remove the black plastic cover over the throttle linkage. That takes a torx bit.