I just got my car done after pulling the tranny and rear end for some work. Everything went back together great and the car drives like a dream. I was standing behind my car tonight while it was idling and noticed somehting I havent ever noticed before. A weird gurgling, or popping sound coming from exhaust. It almost sounds like a miss at idle but the car seems to idle smoothly and drives perfectly. I have mac midlength headers, no cats, and pcmforless.com tuning. I just dont remember hearing this sound last month before I pulled the tranny and rear. Any ideas as to what causes this popping at idle?
Thanks