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ECMlink no closed loop?!

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Black'95

15+ Year Contributor
135
8
Aug 23, 2010
East Berlin, Pennsylvania
6 bolt in my 95 GSX. I can't figure out why it will not stay in closed loop during very light throttle cruising. It doesn't stay in closed loop during idle, either. Here is a clip of a log that shows what it does. It will basically cut fuel like it's in decel mode, but as you can see in the log, I'm still on the gas a bit. Any advice is aooreciated, since I'm out of ideas with this. The car runs speed density, by the way.

Coolant temps are good.
Baro is good.
O2 (narrowband sim) is working normally.
TPS has been adjusted properly, and is working. I don't have a spare TPS to swap in and test..

The issue seemed to start when I put the 6 bolt in, so I swapped in a second CAS to test. It seemed to start and rev a bit smoother, but that's it.
 

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