Largely marketed towards automotive enthusiasts who are looking for a performance muffler that increases performance, but without assaulting the ear canals, Dynomax’s new VT muffler is the best of both worlds.
The DynoMax VT muffler features an exclusive, precisely calibrated patented internal valve that ensures maximum performance and provides a drone-free experience in the vehicle. According to Dynomax’s testing, the VT has proven to flow 841 cubic-feet-per-minute—quite a bit more than some of the other popular brands
The 100-percent welded stainless steel muffler is available in a side inlet/center outlet 14-in. body length and a side inlet/side outlet 16-in. body length. Inlet/outlet bushing diameters include 2 ¼-in.; 2 ½-in.; and 3-in. sizes.
The new muffler also includes slotted bushing ends; exclusive Continuous Roving Fiberglass (CRF) technology that absorbs additional unwanted interior resonance and provides a rich, deep performance tone. It also is covered by a limited lifetime warranty and exclusive 90-day Performance and Sound Guarantee, an offer that lets enthusiasts try the muffler for 90 days. Consumers can return the product within 90 days for a full refund of its purchase price.
Sounds like a good deal to us. We were able to experience the VT’s in action as one of our sister magazines, Muscle Mustangs & Fast Fords magazine recently installed them on one of their late-model 5.0L project cars. Since we liked them so much on that car, we called Dynomax when it came time to replace the tired mufflers on our tow rig.
While we weren’t after any performance increases in changing the mufflers, we were after a decrease in engine drone and overall sound output. The truck was modified by a previous owner and has been rendered catalytic converter-free, and adorned with a pair of budget turbo-style mufflers. They were mellow at idle and that was about it. At our general cruising speed of 70 mph at 2,400 rpm, we verified an in-cabin measurement of 75 decibels as noted on our store-bought sound meter. At full throttle, we logged a peak of 79 decibels in the cabin.
The new VT mufflers went right in, and our initial startup provided pleasant results. From inside, the truck sounded like a stock vehicle again and didn’t have the deep rumble of the turbo mufflers. To validate our senses, we turned on the sound meter once again. At the same cruise rpm, we noted 71 decibels, and with the engine at full song, we only recorded a peak of 75 decibels. While it may not sound like much, a reduction of 4 decibels is quite a significant leap in the sound arena.
The engine even seems to idle and rev cleaner now. Overall, the deep tones have been eradicated, and the once raucous and snappy-sounding exhaust noise has been replaced with an authoritative and tuned note.