The SPEQ Series system, priced at $3,359, replaces everything behind the catalytic converters with 3-inch mandrel-bent 304 stainless-steel tubing, a Tru-X crossover to manage exhaust pulses, and a pair of straight-through mufflers. Crucially, it keeps the Dodge Charger‘s factory active exhaust valves intact — the system uses its own cast stainless steel actuated valves that still respond to the car’s drive modes, rather than forcing the exhaust to stay loud all the time.
A Real Answer To A Real Complaint

Dodge
The timing lines up with what Autoblog‘s own reviewers have said about the Sixpack directly, calling the factory synthetic engine sound “embarrassing,” noting that the real exhaust note underneath is “legitimately good” once the artificial layer is switched off — just not the raucous bark of the Hemi V8 it replaced. A separate test of the four-door R/T reached a similar conclusion, preferring a custom drive mode with the fake sound disabled entirely. MagnaFlow’s system is effectively betting that owners want more of that real exhaust character, not the manufactured layer Dodge added on top of it.
Built Around The Hurricane, Not A Generic Fit
The Hurricane six comes in two states of tune depending on trim — 420 hp in the R/T, up to 550 hp in the Scat Pack — and MagnaFlow designed the SPEQ system’s flow characteristics specifically around that engine rather than adapting a generic muscle-car exhaust. Exterior sound is rated “moderate” and interior sound “mild,” with proprietary no-drone tuning meant to keep highway cruising civil, and finished with dual 4.5-inch black chrome tips carrying laser-etched MagnaFlow branding. The system is backed by a limited lifetime construction warranty.
At $3,359 before installation, it’s not a cheap add-on — but for a car whose own factory-vs-electric-Charger comparison hinges heavily on exhaust authenticity, it’s a direct answer to the Sixpack’s most consistently cited weak point.