rendering with 3dsmax scanline issue

[godwin]

I have been rendering fumefx fire with scanline without using redshift,vray or other rendering plugins. 
Somehow in comp the color range is not there much, even though my output is exr. if i try to turn down the exposure in comp,the color range comes down flat. 
is there any options which i am missing or i have to shift to rendering plugins to solve this.