Bro actually any unichip or tune engine lose its safety precautions output. Company keep safety margin of engine for it's output results and working n when u enhance it's working than stock then that margin may be dangerous to lose anything.
Just a lay man example
If u use ur speakers volume for music within limits even 90 percent loud it will not harm speakers n if u will hear it with volume of 100 percent then there s strong possibility that speakers or eCU of that thing may be harm.
So 90 percent output of engine is stock
If u tune so output becomes 100 which is dangerous for engine.