Is 90-93 db inside a car too loud?

It didn't occur to me before but recently I wanted to find out if some gearheads on here think that 90-93 db is excessive for a car with an aftermarket exhaust system. I downloaded an app (which of course could or could not be accurate unless its a true db meter) and most average of the vehicles i am in are within the 80-84db range with stock components. I installed an exhaust system for my car that came with a silencer and with the silener installed car purrs at 82-85 db inside the car, the difference is that it has a smoother low end burble now. Without the silencer, the car is at 90-93db at 70 mph at 3K RPMs. I used to drive an older 93 Ford F250 pickup with a 4" piping and a Flowmaster muffler and am used to hwy drone. Im 21 now and wondered if 93 db can damage hearing in the long term even though I am insulated within the car. I have driven the car without the silencer for almost a year and it never bugged me until now, to the point its awkward driving a quiet car. The max i drive daily is 1 hour tops. I know motorcyclists have it worse.
Added (1). I would install a silencer but I am not sure if my EGT's are affected since my car came originally with 2" factory and I installed a 3" system from the headers all the way out. Car is a 240sx. Would my egts rise even though i expanded the piping but am now restricting it with a silencer insert or am I being to overcautious. Car is equipped with a 2.4L Inline 4. Thanks

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