Default [Q] How to Lower Shutter Speed for Long Exposure Shots

Hey everyone! Coming from an HTC One M8 here to the Note 3 and I am glad I switched. However, one feature i do miss is the slow shutter speed in order to produce long exposure shots and light trails. I saw that someone said it's possible (dev from Aliance Rom) but he isnt online and I could imagine he gets multiple questions. Can anyone tell me how can i achieve this? This is from the m8 http://dl-1.va.us.xda-developers.com...&ts=1408631840

I already tried FV 5 cam and Lensx and they both took terrible shots so I am trying to find an alternative. Is there a way of doing it from the stock cam?