Apologies for the delay, but wanted to pop on here and post an update for any curious. Wound up deciding to let a professional look at it, and took it to the local Toyota dealer after calling them to confirm they'd be able to work on it. After some back and forth, wound up getting the ECM replaced, ...

Apologies in advance for the long post, but I'm hoping to get a little advice on how to proceed with an issue that has flared up with my otherwise reliable vibe? I've got an 08, manual trans, Moon and tunes package, non gt version, with 263,000 miles on the odometer. Just last week while running err...