I had one of the very first Stage 1 and 2’s done on my 14 Shaker. Without stage 3 no real big gains but still fun to drive. After a year I gave up on my warranty and went the full blown Supercharger, trans mods, rear cradle mods. Now 6 years later still love the car and it is now modified to the point I will never trade it. I just added a Hellcat to the fleet this year but still enjoy driving the Challenger.