If you’re looking for the most bang-for-the-buck, few bolt-ons will add more power than a nitrous kit. And the 2008-2009 Dodge 5.7L and 6.1L EFI Hemi engines are the perfect platform for nitrous injection upgrades. The ZEX nitrous system for the new Dodge Hemi Challenger was extensively engineered for a simple plug and play installation and includes custom-designed brackets and a special fuel line adapter that helps you finish the installation in only 2-3 hours. For the ultimate in engine safety, the ZEX kit uses an advanced safety technology called Active Fuel Control. These exclusive ZEX technologies monitors the nitrous bottle pressure and adjusts the kit’s fuel enrichment so you are never too rich or too lean. The ZEX-patented electronic TPS switch is another example of safe engineering. A ZEX exclusive, the throttle position activation feature engages the nitrous only at wide-open throttle using your accelerator pedal. This technology not only makes it easy for you to activate the nitrous, but it is fully compatible with the Challenger’s throttle-by-wire engine. The ZEX kit is adjustable from 75 hp to 175 hp, making it perfect for any Challenger, street or race. Retail pricing for the ZEX Dodge Challenger Nitrous System (p/n 82322) is $637.50. To see how easy it is to install the Dodge Challenger ZEX nitrous kit, check out the two-part installation videos below.