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[brivinci]

UPDATE:

So, I recently drove my car and it was revving through the RPM range beautifully! Although I am not a fan something fixing itself (as its bound to come back) it was so nice to be able to enjoy the car as intended. Later, doing some maintenance, I noticed that the newer fuel trap that I installed was broken! Don't get me started on the terrible quality of everything these days. I had to completely remake the damn thing. The top was barely glued one, it was garbage. I got it all back together and assumed that maybe its being broken was the issue with my car. I reinstalled and the car regained its stumble between 3-4k. So, I pulled the vac line off that comes from the MAP sensor and it drives lovely again!!??

So, what would you say the issue is? With the MAP sensor piped in, the car will NOT rev cleanly through the rev range and has a wildly noticeable stumble between 3-4k. Like, if you are in that range going up a hill, it might not be able to get past 4k and feels like there is a misfire. With the MAP sensor vac line detached at the fuel trap, the car runs perfectly. This is not idea. How bad is it to run with the MAP sensor detached? I do have another ECU from a 95 Cooper that I can swap in to test....just have to drive an hour to get it. Thoughts?