I have reduced body power after hitting the head and taking a long dump.

So what kinda are car or truck are you talking about,model , and year and scan tool you're using?

Did you do an auto scan , and what kinds of codes did you pull ? Are these codes possibly related to a shared ground or power source? Have you checked service bulletins? Are you accelerating hard and  catching some air going over these hard  bumps typically found in the school zones?