If you mean the EGR (exhaust Gas Reclaimer), no.
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.
No, but if the valve is intended to blow at high pressure and you have it connected to the negative pressure of a NA engine intake so it will never open. You could use a brass plug instead as this is much cheaper and will provide the same functionality. With out a turbo making boost, there is nothing to "blow off"
Nope. Blow off valves vent to the atmosphere (loud), a bypass does not.
eBay
It doesn't
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,