and whats the difference between RAM, cold air intake and TYPHOON air intakes?????
I think you should choose an OEM BMW air intake system. The BMW intake manifold and filter arrangement will likely be the best available on the market. It likely would be very hard to measure any differences between the various filters unless you can run your engine at full throttle for long periods at over 5000 RPM. If you have a cold air source, you might be able feel a little difference in Performance on a rainy day when the moisture in the air tends to slow the rate of combustion slightly. The progression of the flame front in a cylinder may be optimized by the positioning of the spark plug and valve location in the combustion chamber. Any modification to the original OEM intake air system must have an EPA certification sticker on each part replaced.
Truth of the matter is, either intake will most likely gain you less than 3 hp, and in many cases you actually lose power. BMW engineers are very intelligent people and know how to design a car. I've seen many people buy these and lose power, myself included. I had the KN intake on my e36 328is, I lost power in the lower range, but gained 2 in the higher RPMs. That being said, the noise was so much better I kept the intake. Beware: The oils used in KN filters will wreck your MAF, look for intakes that use no oil, like AFE pro dry.
ram is also known as short ram. a cold air intake is a full intake that gathers air from underneath the bumper and is the best performance set up for any car. a short ram intake means the intake extends only a short distance from the throttle body. its better than a factory intake but not as good as a cold air. the RAM although it gets more air than stock its all hot air from the engine, so youre better off with a cold air intake. Typhoon is a specific intake made by KN
