Guys.. I finally managed to get the air filter for my zma from a place called rajahmundry which is 500kms far from Hyderabad. They got stock over there.
I never changed the air filter after I bought my zma. Now it is 1 year old and 11,000kms ODO. What kind of performance changes I can expect after replacing the existing old air filter with the new one.
Sent from my HTC One





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