Just bought a new 2018 JLU Sahara and have been loving it. has about 1300 miles on it now and today it started acting weird. i was noticing some very low whistling sounds which is due to the turbo I am sure, but when I punch it to accelerate a very loud screaming/revving sound has started that was not there before. seems to only happen once the turbo kicks in. I have made an appointment with the dealership to find out whats going on but just wanted to see if anyone else has heard of this. cant really find anything online that describes what I am hearing.