The phrase "few notches" means to intensify or increase the level or quality of something. It implies taking things up a level or making something better. Full definition
However, you may need to go up few notches from the # 849 (inc.. (zdnet.com)
With any new business opportunity, deliberately move your customers» expectations up a few notches and over-deliver on your promises. (canadianbusiness.com)
But CP recently reported its lowest - ever operating ratio of 65.9 %, only a few notches behind rival Canadian National Railway. (canadianbusiness.com)