I don't know about the 1Y for a racing setup. I'm not running a Neu, but have tried motors with a similar kv rating. I suppose it depends on the track you're running on. I tried running a 2200kv motor and it was way too much for 4S. I suppose it might have been ok with 3S, but the anticipated current draw lead me away from that config.

I've progressively gone to lower and lower kv motors until I found something that I am really comfortable with on our relatively tight track. I am now running a 9XL, which is around an 1800kv motor. Running it 16/46, it's still one of the fastest, if not THE fastest truck on the track. I'd really have to give some consideration of either a 1512 1.5Y or 1515 2.5d.