He is always willing to help. You are in good hands

Thing is my car was perfectly working before going to the tuning shop so I do not think the dealership did a wrong installation as I remember seeing him hand tight the sensors then use a wrench to torque it. Could o2 sensors break on a dyno due to heat or vibration transmitted to the car from the tow straps?

I don't think so. It would have to be a really lean, or really rich mixture to foul the sensors.

The tuner did 10 pulls before final flash could this be it. I remember first pull was pissing gas from the tail pipes.

If you had gasoline running out the pipes. The sensors could be coated with soot. If that's the case. You could try to remove them and use a spray cleaner on them.

Any time I hear about limp mode/loss of power problems, I have flashbacks. I was having limp mode problems a couple years ago. Car would go into limp randomly. Sometimes it would run fine for days and sometimes would happen three minutes after starting the car. The only thing that seemed to temporarily fix the problem was let it sit overnight, disconnect battery for awhile, or use an app to clear any CELs (sometimes there were some, sometimes there weren't). All options inconvenient. As before, it would go back into limp after un undetermined time for undetermined reasons. Of all the things it could have/should have been, and all the things I tinkered with or swapped, it turned out to be the throttle bodies. I took them off and they looked spotless, but I hit them with some throttle body cleaner anyways and put them back on and now years later haven't had the problem come back once. Can't say if it will help your problem, but a couple dollars for a can of cleaner and 10 minutes of work won't hurt anything.

Changed the o2 sensors, cleaned the throttle bodies, cleaned the MAF sensors, cleaned the air filters and it's still happening.

Everything in this thread I've read seems to point towards something in the tune being the issue :twocents:

That was suggested in the second post :tup:

The original tuner made things right and richened up the AFR. He also disabled secondary o2 sensors. Car is a bit less snappy but does not pull timing anymore.