Guys, my 2002 city was suparb giving me 125km average on 55kg cylinder, then suddenly one day, my yellow check light started to on during drive, i called honda they said some of ur sensors has been displaced a bit, so not such serious problem ( THEY SAID ),,,
i noticed that my average came down to 65km per full cng, with high rpm ( cudnt adjusted )
i got my car tuned 5 times by different CNG experts, but nothing,
one day my friend suggest me to diagnose my car by tech computers, i went to tariq road, the man diagnosed my car by attaching some sort of computer, started ma vehicle,
and found that MAP sensor ( manifold absolute pressure sensor) is down, new rs. 5k, used 2000,
as i replaced the sensor,
my car came back to normal, perfect average, perfect rpm,
so thats it,