its not about any hakeem or rocket science...just common sense...u can come over to f-10 workshop anytime for this issue..
u just need the proper mixture level of the gas for air intakes...ppl around here know my cars and they know how much m against blockin air...
my santro didnot have the lambda system..and was runnin daily on cng with air intake...
my civic and city r equipped with lambda..so i don't need to block air....