Jatt sahab... CNG mein 2 cheezein hoti hain:-
Ya toh aap milage le lo. Means 1 cylinder mein 170km kar lo. Is mein CNG kam khuli hoti hai aur gari bhagti kam hai magar milage ziyada deti hai
Ya aap gari bhaga lo, is mein milage kam mile ga magar gari bhage gi fit. Is case mein CNG ko puri khol dete hain.
Baki rahi carburetor mein hole ki baat toh sorry is ka idea nahi.