If you're like most owners then you worry about the safety of Nitrous Oxide inside your car. With the ZEX kit the worry is eliminated because they use an advanced safety technology called Active Fuel Control that monitors the nitrous bottle pressure and adjusts the kits fuel enrichment so you never run too rich or too lean. Another safety feature is ZEX's patented electronic TPS switch, the throttle position activation feature engages the nitrous only at wide-open throttle using the accelerator pedal. This makes it easy to activate the nitrous as it's fully compatible with the Challengers throttle-by-wire engine.
The ZEX kit for the Challenger can be adjusted from 75 horsepower all the way up to 175 horsepower. The ZEX kit retails for around $700.00. Below I have included two installation videos from ZEX. They show you how easy the install is.