Catback Exhaust for Dodge Charger (2011-2014) 3.6LHigh Flow Catback Exhaust for 2011 2014 Dodge Charger What it Does: Upgrades the restrictive factory exhaust system to lower backpressure, improve exhaust scavenging, and increase horsepower and torque across the RPM range. The Stock Charger Exhaust Bottleneck The factory exhaust system on the 2011 2014 Dodge Charger 3. 6L Pentastar relies on crush bent tubing and heavily baffled chambered mufflers, which prioritize acoustic suppression over