Eagle landed in my driveway

[MIPS]

hi, not sure what that opening is for. It MAY be the bung for the "downstream" O2 sensor. Just plug it. My 84 does not have it, but then again, I have a complete new exhaust system, it may have been there originally.  gz

If this was pulse air originally instead of a smog pump there should be an upstream air port somewhere. Smog pumps liked to inject up at the exhaust ports but this indicates it was further down, past the O2 sensor.



If you aren't putting a proper replacement cat with an air tube and you passed inspection as-is there shouldn't be an issue removing the rest of it.

[Bluevan]

Softbuster, this Eagle does indeed have a 2.35 gear ratio.  It has 96000 miles on it and I believe has the original cat.  The air tube going to it was rusted off so it was creating a leak and I suspected that it could be a blockage issue so I took it out and replaced with a piece of straight pipe.    It did not really make a huge difference, but the more I drive the car the better it seems to get.  At some point I will put a new high flow cat under there.  This car is not going to win any races but it works great for cruising around.  Been getting lots of compliments.

MIPS, thanks for the diagram.  Now I can remove the rest of that stuff and clean up under the hood a bit.  I will keep it all if someday a future owner wants to (or has to) put it all back.

[MIPS]

Yeah even used some of those parts are starting to be worth something. I've seen a few places that changed the rules on older vehicle emissions (no annual testing required but now all specced hardware must be installed to pass a visual inspection) and now that bits like the formed hoses and valves are not being made it's up to whoever hoarded these bits to get it working again.