I took the Caliber to the engine tuner yesterday to get the supercharger finalized. Before adding the supercharger we had 180hp and now we are at 230hp. The car drives great! We had to add a new map sensor and fuel injectors. Our tuner used HP Tuners. Injectors: Matched set of 4 injectors 650cc/min Map sensor: https://www.autozone.com/engine-management/map-sensor/p/duralast-map-sensor-su13100/179854_0_0