I have a 2.4 that has been dyno'd stock, with exhaust change, with intake change, and then stage I, stage II, and stage III supercharged. If you search you should be able to find them all on here. At stage I I also changed out the header, hi-flow cat and Solo exhaust. I never did re-dyno after I had the engine re-built with carillo rods, wisco ceramic coated pistons, and supertech valves and springs. The dyno I had used burned down along with the shop it was in.