if u r talking abt cng
goto faisal town cng ... they are experts (h) ... its on college road near saif traders rims wala ...
they will charge u 300 or 200 n will do what ever u want to program ur car ...
bus woh salay hamesha kehtay hai airfilter change kerva lo agar ganda hai appka air filter to airfilter bhe change kerva lena warna usko kehna tuning ker day ...
petrol ka nai pata ...