Hey guys I am going to turn to the group for some advice on a couple of things. Firstly, my 2017 XP4T with only about 200 miles on it makes a fairly loud whistling / wining noise at around 35 – 40mph and it gets a little worse for a second when I let off the gas. Performance seems crisp and fine but I do not have much to compare it to. Engine is all stock other than Airaid air filter. I am wondering if the noise is standard turbo sounds (I have not owned a turbo RZR before) or something else? It is a little obnoxious especially for the backseat passengers. I would like to know if this is normal or not?

Secondly, I want to have a minor tune and a few basic performance upgrades done. Other than doing this myself can any of you recommend a good shop in the N. NW Phoenix area who I could trust to do this kind of work? Thank you.

Utah RZR Rentals