Iwould like to upgrade the exhaust on my 06 malibu. Here ismy question, the exhaust comes off the motor through the cats, then into a tube thing under the passanger compartment, then into the muffler. What is the tube thing under the passanger compartment. I heard it might be a noise ressenator, but haven't had a conformation on that. I would like to use a single inlet-dual outlet muffler, but i'm worried about the sound. Anyone have any experance with changing the exhaust on the v6 engines.I havea 3.5 liter. Thanks everyone.

 

All my exp with the resonators is that they are usally AFTER the muffler. Is the "tube thing" just a larger portion of exhust pipe or does it look like a small muffler, if it looks like a small muffler then its the resonator, otherwise its just a larger portion of exhust pipe for bringing the two sides of the exhust together after the cats prior to dumping into the muffler.