Thanks for info.
Just for confirmation, i read sometime ago in suzuki leaflet that plug gap should be 0.7mm.
Also some people consider 20 deg to be too far out and consider 14-16 deg as optimal that's why i wanted to confirm.
Note: stap 00b is only available in ff cng cars.
now i remember there is a small box under glove compartment fender side with stap written on it. what exactly is its function? is it advancer? if so, the car should be able to run on both cng and petrol with correct timing when properly configured but i never saw anyone adjusting it. is it so?