Originally Posted by SRP02WRX
So my car decided it wants to be a whore, and started making a really loud hissing/air leak noise at idle. I can't figure out where it's coming from though.
Two most common places for air leaks on a wrx is the blue Tee fitting behind the alternator (no barbs to hold on the hoses), or the EBCS return line to the intake tube (drys out n cracks long before anything else).
Check there first