I would like to jump into the middle of this thread because there has been a lot of discussion around all the same issues and symptoms I have had.
Grounding kit?
Was a great try on my behalf, didn't really make a difference in the end.
Cams?
272 Kelfords on my engine, 272 on yours, which means we are going to burble and misfire based on the stock ecu. Mostly cyl 2 and 4, ESPECIALLY cyl 2 (I changed plugs and coils, no difference.)
Stock ECU?
Yes, looks like we are both running it and that's part of our problem. I had heard a ton of times now that AEM or HYDRA will get rid of this, why - I don't have an answer specifically.
Specific cylinder fueling?
We are starting to experiment on changing the fueling for each cylinder individually.
When?
Again, yours only happens at idle, as does mine. Sometimes up to 15% of the time :lol: at cruise its buttery smooth and boost. No roughness detected.
In all honesty, I wouldn't worry about it :lol: