My 'new' car seems immaculate inside and out(87K, 1-owner, So. Cal car).

Is there a place on the car I should take a look at the wiring harness on this car so i do not experience this problem possibly in the future.

Also, I have heard these cars are goverened to 130MPH.
Can this be overridden, and are chips available for this car?

Thanks for any ones help!