345s-bspinnin
Enthusiast
The 02 **** on the 90 deg. "test pipe" can be used for the secondary 02 sensor or a wideband. A lot of folks use spark plug non-foulers to mitigate a CEL when a catalytic converter isn't present. My GENIII ARH have an identical setup.

Another problem we ran into on the Mustang was it "shut-down" @ 150 mph.
This is a pic after I cleaned the pistons off with 80 grit sand paper.......
just kidding!!

