In my old 1978 the flame trap was inline with a hose coming from the bottom of the air filter box. But my 1991 doesn't have that hose. I have VADIS on CD-ROM, and the factory image of its location is nothing like my car.
I've taken some photos of the only two likely things I can see.
The item in circle 1 is located between the two rearmost fuel injectors.
Here's a closeup:
Is in inside either circle 1 or 2? If not, can anyone help me locate it?