Maruti Suzuki Scross car Pikup low and mileage low black smoke problem

Maruti Suzuki Scross car Pikup low and mileage low black smoke problem
How to check your car how to solved this problem
1) car complete scanning and which code ##
2) turbo house pressure pipe check
3)boost solonight vale check & vacuum pipe line and voltage sappliy
4)turbo activator road working up and Down
5) check leakage intercoler air
6) egr body chock
So this is solved 6 method