BHAI JAAN PEHLEY toh appney gli mei cng laga ke bewaqoofi ki, first your Car Warrnty which 50,000km or 2 years is avoid, second if your car is 2010 then the engine is new, and on new engine u use CNG it means if you use CNG frequently in traffic jams and on dry and heat whether, there is a chance you will jammed your car tappet and there is no way to adjust tappet in 2NZ.
Secondly bhai gli has very good average giving 10 km/l in city and 15-17km/liter on 110km/hr rpm 3,200.
And thirdly there will be increase in CNG price thats why CNG kits are now cheaper as compare to previous year.
Chalo ab app mujhe yeh batao ke appney Advancer kaun sa lagay hain agar Advancer Neotech ka hain toh hatao jaldi aur ussei Green Colour ka Lavato Tomasato advancer lagao hain ITaly ka HAIN. Bas CNG conversion waley package kham bata detay hain lekin advancer MAP1,MAP2 khachra laga detay hain isliye uski waja sei car knock karti hain.
Aur haan i suggest you to drive your car on petrol in city and u can use CNG after running of engine atleast 5,000km and only on highways, so that your car will have a smooth run.
And also bhai jaan u can visit BRC on sharefaisal. CNG Conversation if your problem is not solved. Actually the kits they are fitting is actually made for EFI Cars and they are taking 1,75,000/- for installation including Lightwiehgt ITALIAN CYLINDER if you wish.
And further more if you need any assistance contact me on 0300-2197670 and i will be back in Pakistan as iam going to dubai for 04 days.