Reply to Pitch bending on the S4... from 130BPM to 160BPM

I mostly play electro and electrohouse with some minimal etc mostly around 120-130BPM but there are a couple songs I would really really like to play but they are on the 170-180BPMs. I tried to match up using the pitch bends but every try came up sounding like garbage. Even trying to "cover up" with another track came up to chipmunk voice and dammit I threw the S4 over the fence.

So I would like to know how to do this technically on the S4 since I cant quite apply what the manual say to what I try to accomplish. Also how to do this artistically to make it sound good and less patched up, in other words, how you personally do this yourselve.

Bonus points for youtube videos.

Thanks!!