Yes as std they had one, in the airbox area.
With one missing theory says it will induce a bit of lag, how much it creates depends on many things.
A lot are moved to the cold side, ie between intercooler and the plenum when fitting silicone pipes etc, and then used with a atmospheric dump valve, though of course you can still use a atmo dv on the hot(turbo) side should you wish, though here if using a cone filter it would breathe in some hot air that has already been compressed.
tabetha