The issue, for the most part, is that in 4WD the EPS system essentially loses/drops power at about 1/4-1/2 turn, making it feel as if you have manual steering past that point. In 2WD you have EPS all the way while your turning the bars. I feel it, the service manager feels it, and the asst. service manager feels it on my SP. They were all surprised. After the dealer took the issue to a Polaris tech (phone) all they would say is that it’s "working as designed" and that it’s to prevent damage to suspension parts when in 4WD. That sounds like a load of B.S. to me.
That said….I also have a 2015 570 EPS (NON-SP) and the power steering is very different – It acts the same in 4WD as it does in 2WD. I like the non-SP steering a lot better.
So I’m going to pick up my SP from the shop tomorrow. The service manager has a brand new "SP" for me to compare to. He said he rode the new SP and it does exactly what my SP does – EPS dropping power while in 4WD turning…."as designed".
If this is true – they maybe Polaris does this for the SP because of the dual A-Arm suspension up front? Or maybe it’s because the close-ratio 4WD kicks on a lot more and could cause damage in conjunction with EPS? I’m told that the Polaris EPS system is the most sophisticated of all the systems – taking multiple inputs the steering position, forces against tire, etc, etc. So maybe they did program the EPS software to act differently for SPs?
Bottom line is that I MUCH prefer the steering in on my non-SP.
My question to you SP owners – Do you all feel that EPS power-drop on your machine?
