I removed mine and I am not getting loss of power at lower rpm. Maybe it is because my low RPM sucks to begin with since I do have a GTS. But the sound is there and lift kicks a bit harder (might be my imagination).
I suggest that you try it out for 1 day or 2 and see if you like it. If you have problems, then put it back on. It is not like you are chopping off tubes and relocating anything. The removal is very easy, just make sure you use a fat enough screw to plug up the hose.
You can do this for a time being until you await for your Intake
. You gotta do a bit more work installing a CAI
or a SRI
anyways so take this as a practice run on messing around with that part of the engine bay.