I was trying to pass someone and truck hit a hard boost which surprised me because I don't think I was accelerating that hard.

Then cel light and was stuck in 4th gear. I pulled off freeway and shut down, cleared code and drove 2 miles home with no other code or shift issues.

About a month ago I switched from egr less tuning to full delete. So where should I look or steps needed.

Truck has 17k miles on it.