Did you pull down the collar on the shift boot then twist the knob or just twist the knobWell I guess my Sick Speed 8" blue flower shift knob is officially my first mod... lol. I bought this shift knob for my 2013 Toyota Yaris a few months ago and I made sure to get it from the car when it was totaled in a wreck a few weeks ago. I was positive it wouldn't fit in my new iM but to my surprise it did!! I was literally in tears when I saw that it was a perfect fit because that Yaris was my baby and I loved that little car alot. That shift knob is like a small piece of the personality my little Yaris had.