Disconnecting evap certainly helped my tuning logs. Much more consistent. A big thing was also heat creep and my tuning procedure. I would warm up car, drive and tune. Pull over, make adjustments, then repeat. However, as you are sitting with the engine off the heat is saturating the engine. So then I take off and immediately log for another tune. Well, the heat has leaned everything out so now my AFR error % is off again.
I do believe the FWI really helped. With the HAI, Everytime the fans kicked on it would go real lean. Screwed up my logs. Overall it was a combination of things I think. The MAP issue may have been a red herring, or not, but I feel better having a 1 bar because there definitely is other reports of an l36 pcm freaking out when it sees boost. I did not see it going crazy rich on decel today either. Also my lowest IPW I had was 1.7, usually 1.8. Tonight I saw 1.6 for the first time. Not sure what caused that though.
Also, have you guys used Bluecats transmission calculator? I used that a week ago and my car is much smoother shifting. I used to have issues with converter lock in 4th causing knock when I slowly stepped on the gas. Now it locks and unlocks much smoother and shifts like a stock car. I do have a shift kit and increased pressure, but the calculator made everything smooth but still firm. Highly recommend it.