I will start off with, I can find nothing to suggest a boost leak...

Our reverted to stock sedan has a high idle;
It seemed to go away for the summer, but it's back.

When driving around, and coming to a stop at a light our car almost always wants to idle at around 1,500rpm - our "fix" is to put on circulate, or a/c, then it goes down to the much more preferred 850rpm.

I am wondering if there might be something in the tune that I flashed to the car, or if there might be an undiagnosed TB issue.
IIRC I did a check, and the TPS looks correct - because my Tech2 shows when I move the throttle vs when it's closed.

This car was bought from a former active member here, who bought it with mods (when he was active here, he had an SS/2.4 car iiirc), and iirc his only changes while he owned this car were to swap in a catless downpipe and changing for a louder muffler...
When I got it, it had several issues and I took the time to properly fix everything, and put it back to stock.
The only deviation from stock is that I didn't revert back to stock MAP's - I left he GMS1 MAP's in place - I did flash a GMS1 tune previously found in, and saved from the HPT repository.
(and I left off the "turbocharged" badge )

If anyone has any thought's, I'd honestly appreciate them.