I have a 2012 GS with 85k on it. I have it ZZP tuned, intake, downpipe. This just started in the last couple months. If I drive more than an hour or so, and try to get on it, the turbo will cut out fully and I get a pending code p0299. I can turn the car off for a min and start again, turbo is fine. I replaced the cam sensors, IAT sensor, the BPV with a forge model, and checked all of my intake piping and filter. I took the car into the shop and they couldn't get the car to do it after testing, and only could see the pending code. I picked it up, and picked up my friend from the airport and drove for about an hour total, and trying to get on the freeway, the turbo cutout. Same pending code. Pulled off, turned off car, turned on, turbo is back. Local car group just keeps screaming "bad turbo for that code". But I'm confused how turning off the car and on would fix the issue if it was a bad turbo? It seems like a sensor issue, possibly even related to the tune, but I can't seem to figure it out. Anyone have any ideas?