No, there is no reason for it. In turbo cars you have intercooler pipes that need pressure released at certain times. You have no intercooler in non-turbo cars. I guess you could install one if you wanted to look silly, but it wouldn't serve any purpose or be functional. I hear you can get a fake bov that makes the sound, if that's what you are looking for.
Check for damaged or inoperative idle control valve assembly.
next to the blow off switch
A splitter valve has a blow off valve sound but it redirects the airflow. It combines the features of a diverter valve and blow off in one housing.
It already has a blow off valve on it, and a rather good one.
No, without a turbo, there is no blow off valve. However, if you really wanted to, they have fake blow off valves for sale. These mimic the sound of a blow off valve. It would be an absolute waste of money, but hey, it's your money.
Blow-Off Valve
Blow off valve faulty or expansion tank needed at water heater.
It doesn't
eBay
You could mount it, but there is no pressure to blow off.
either a forge 004 blow off valve or a forge splitter, a partial blow off valve and partial recirculation valve. which is what i run on my a4. you may be able to find better prices of these somewhere else online, i never checked,
you can get a fake sounding blow off valve, other wise bov's are used for force induction application.