I emailed Dynomax and asked them about their new VT muffler in regards to whether this muffler would eliminate the drone on the 5.7 Hemi with MDS on the Challenger. They responded that yes it would eliminate the drone. I also asked them how the VT muffler flowed compared to the Ultraflow mufffler. They said that the Ultraflow muffler outflowed the VT muffler by a little bit. The Dynomax website compares the 2 1/2 inch inlet and outlet VT to a compareable Magnaflow and Flowmaster muffler in terms of exhaust flow. The VT 17956 flows 841 cfm at 1.5 inches of mercury. The Magnaflow 11226 flows 588 cfm at 1.5 inches of mercury and the Flowmaster 42541 flows 373 cfm at 1.5 inches of mercury.
I asked them to post a sound clip of a 5.7 Hemi Challenger with the MDS engaged equiped with these mufflers. I told them many Challenger owners are interested in an exhaust system that has no drone. Hopefully they will post a sound clip so we can see the results before purchasing these mufflers.
I asked them to post a sound clip of a 5.7 Hemi Challenger with the MDS engaged equiped with these mufflers. I told them many Challenger owners are interested in an exhaust system that has no drone. Hopefully they will post a sound clip so we can see the results before purchasing these mufflers.