2015 Challenger Hellcat

The owner of this Black Beauty came to us with a very simple request. A pin, a pulley and a tune. So step one was to pin the stock crank pulley.  Step two was install a 2.85 ZPE GripTec pulley with a RPM Gates blower belt. Step three was to custom tune the car on our dyno using HP Tuners. The Results? How about a gain of over 100 rwhp!!! Oh ya and later on we added Demon injectors and an air intake and picked up 34 more hp. Hmmmm time for some headers and a smaller pulley!!