Sometimes on cold start when i put car on reverse gear with breaks applied, the car seems to be pushing / jerking to go reverse by force afterwards it becomes normal.
Also i note that when idle with AC on and gear on "N", the rpm goes to 1500 and it comes back to 1000 when i push accelerator and release it back. On gear at "D", the rpm toggles between 500 and 1000 when idle.
Furthermore, there is some lag(delay) when i apply acceleration and car really do so.
i cant understand why its all happening when i have my car tuned.