Yes. Physically, it’s a 450 with the battery pack and motor of 450x. The dashboard is still not that of the real 450x. That’s why this topic and the invite you got over email says “Warp mode trials” and not “450x trials”
There you go. The sound is from the belt and since there is more power through the belt now. The sound will be higher but just like our Ather 450s I’m sure the sound would descrease with more usage.