agrred
its all about the expertise of installer who is installing cng kit according to your car's requirement and configuring of emulator
sadly people when have bad experience of cng due to the bad installer, they blaimes that cng cause this ,
infact it is not true, people shoul dbe educated enough now to accept cng as alternative fuel and it is just like other osurce of fuel have pros and cons,
even petrol is not safer if mishandled
do not blame cng because of bad experience, it may be resulted due to poor installation