the exaust sounds like it's gurgling
my exaust sounds like it's gurgling when i rev the engine and it calms down. vortex says it's cold/warm air mixing, but shouldn't it stop either when i've had the car on for awhile? what about that little hole on the back of the muffler? if that's "plugged up" will it make that same sound? is there anything i can do so it doesn't do that?