please check if the ecu light is coming on and if not then dont drive it on cng as it will never go above 120km on cng and u might be driving an auto 6cyl engine with cng ......call me 03154193435 faisal ...i live in pcsir johar town near shukat khanum i cud give it a look if that ok with u.......
note: on cng ur car wud never cross 120km/h as i had the same issue coz cng kits cant provide enough to produce power