I don't get why you people read things into statements rather than read what is there! Performance tuning is a very small market in India at this moment in time. Most of the people who buy these items are on one or a couple of enthusiasts forums. Most of the Indians are scared to buy anything they do not have heard of (and therefore ask others) or are worried about warranty issues. The Nano shows how it works. a couple of cars catch fire and 95% of the population is up in arms. If cotton gauze filters are as bad as you and others make out then only idiots would pay for 1000 listings at a time to sell them. You don't need to teach me anything about air intakes. I design them all day long. This you tube video you promote here is for the practical side of motoring virtually useless. This was just a test with some sort of particles for not even a minute each. If you want to make a conclusive test it has got to last for at least 24hours. Additionally it has to varied by running it under dry conditions, high humidity, water ingression, vibration etc. This is the reason why manufacturers test for 15 to 20 lakhs km before in real time conditions releasing a new car, which is after all the lab tests. I know about all these tests and many more. With 32 years of automotive engineering experience developing products for the automotive industries I still have no reason to not use cotton gauze. It it seems that every idiots opinion is worth more than high investment, endless testing and development. I wonder how often I have to repeat my question before I get an answer? Where is the proof that cotton gauze filters are detrimental for the engine and the MAF? It is a simple question considering that people come up with all sorts of things from the net. Why not finding the proof? GIVE ME THE PROOF or is it too simple? ---------- Post added at 07:26 PM ---------- Previous post was at 07:21 PM ---------- Shaj, this means that the 5% of the 5% are just you me and Jayadev.:mrgreen: By the way, I am not sure as yet when I can be back. Will stay in touch. It is a test BUT WHAT DOES IT PROVE?