[HELP]need to know how to set physics for a particle mod

help

#1

I try to write a smoke particle mod for cars and it worked but it doesn’t look like the default GTA5 smoke its normal in day but its very deep dark under the streetlight and I think particle mod is just a graphic mod the smoke never go through the car behind of me and the smoke can not reflect the light back,It is diffrent with the default smoke particle. is there anyway to add physics to the particle graphic mod?help me out plz