this engine never smelled CNG 
Lol Exactly....
ek aur b race haara hon yar vo b bataon ga..
03 civic vit oriel fully tuned...cold air intake, headers,iridium plugs, free flow piping, light weight fly wheel, improved ignition system, and seats were removed to make it light weight....i stayed on its tail...
most of the time i drive calmly...want to do this for a bit enjoyment..
want to make it enough fast to beat stock r18..
thats not available... 
okay headers and cold air intake is my next mission... 
what about timing? make it a bit advance?
changing injectors need kafi saray paisay vo abi nahi 
and i dont know any thing about SAFC/VAFC..and wideband... 
bs r18 to hara lon sakoon aa jaay ga...