What is your Jeep doing thats you feel like its running poorly. Generally speaking you should be able to make it run good with an open header (just stating the extreme not suggesting you do that).
As I noted in my original post, after I put on the "new" (good) carb, it ran much better.... then I took off the cat and pulse air tubes, replaced the exhaust pipe off the manifold (with the open pulse air hole), and installed a muffler. The jeep bogged down quite a bit. (noticeably different than before I messed with the exhaust)
So it went from a cat with pulse air connected, no muffler, to an open pulse air hole with a muffler and tail pipe.
I didn't make any adjustments to the carb or timing.
I just took it to an "old guy" that has a shop and he said it needed back pressure and I should put a cat on. Does that make any sense to you? It did to me in that something changed when I removed the cat and had the pulse air connected.
It's a bummer that all my gear head friends are back in California and I'm not "connected" in Nashville.... yet
To his point, sorry got sidetracked by "oh, oh, I've done this!" 🙋...this shouldn't make it run bad. Pulse air tubes was the term that you were looking, check...now let's get it running better?
Like Keith was trying to point out, if it hasn't been Nuttered then the computer (MCU) could still be affecting things. Mainly could be jacking with your timing through vacuum advance.
Air Tube holes have to be plugged/capped on both ends, of both tunes. Injection point have been discussed, but what Air filter housing are you running? If OEM, are the points on the bottom of the housing capped (3/4" rubber caps from local parts store work great)
If those are checked off, (Nutter completed, timing reset, pulse air intake ports capped) I always look toward vacuum leaks, as they can be numerous...especially if you haven't had the chance to do a full clean up post Nuttered.
Thanks for sticking with me... it was my suspicion that it's vacuum related. I do have the original air cleaner on, and I know that there are vacuum lines all over the place. Some of them are most likely unnecessary after the Nutter.
When I got this there were all kinds of unused plugs and ...
Vacuum lines, that I believe may not be necessary.
I'm wondering if I should go with a basic air filter and clean and plug vac lines that are not necessary.
As I'm learning the 2 big connections here are not hooked up and may have been connected to the pulse air system?
I do have some lines plugged, but I'm not sure which ones should go where? I was told that using a 77 vac hose diagram may be what I need to copy?
I took it to the "old guy" to sort out the vacuum lines and he tells me to get the Cat...now the more I think about it, I'm not sure that's correct?
Are the "3 vacuum solenoids used after the nutter?
I'd love to get my hands on photos of a 77's vacuum lines. To see what's not there and what is.
Should I get another air cleaner? without all the stuff on the stock one... (again, I'm thinking that most of the hoses on the stock air cleaner aren't necessary after the nutter)