Originally Posted by ModlessG
I have the Needs Wings single CAI. Just for grins I removed it and did some 1/4 mile runs with the stock intake that happens to have new K & N drop ins. My corrected times were .2 slower and my top speed was 2 mph less. I feel that many of the intakes on the market are just snake oil noise makers. However thinking that the stock intake is the very best performing unit available ignores the noise,BS requirements made by the government.
I think that you would have to spend money on mods to get the benefits from a CAI. I may be a little naive but when I look at M3s,M5s and M6s, none of them used CAI and they squeeze everything out of every liter of the engine. They are also NA engines. They have massive intakes, individual butterfly throttle valves for each cylinder. I have to say this, I'm not a BMW fan! I just work for them. I'm a Mercedes guy and plan on working for them in the near future, but their engines are amazing.