Smoke System...make longer and thinker?

Hey guysi have this TU-154 and it has some smoke but i want the smoke trail to be longer and thicker...how do i do this??this is what the smoke system lookks now...but i dont know what to change!(SMOKESYSTEM)//smoke.0=-3.400,-40.00,-10.48, fx_smoke_rxsmoke.1=-3.200,-58.00,0.00, fx_smoke_rx//smoke.2=-3.400,-40.00,10.48, fx_smoke_rxhope someone has some ideas!cheersNick