If you Push the accelorator like 70% you hear the Engine get Raspy, but it may just be me. I hooked up my scan tool to my car and wasn't able to see the Valve timing, soo pissed. But I got to Wait for them to come out with an update for the modis. I hooked it up to a 04 n Galant and Was able to see the Valve Timing in Degrees. And the Spark.