Yes MPH. Sorry
and it is not turbo. 3.7
Also let me correct more it is not the MPH when the RPM are between 1000 to 1500 that is when it does that.
I changed the gear to M and then drove by changing gears manually and nothing happened. I kept the rpm above 1500
Strange. I will try to clean the throttle body and change plugs. But if anyone know that will help.