Quote:
Originally Posted by lsturbointeg
Wouldn't you think having an intake will allow the engine to breathe more efficiently?or would a drop in K&N filter suffice?
|
Even drop in filters barely make a dent.
Where would the efficiency come from? OEM replacement intakes don't actually alter airflow all that much, they're mostly for sound. A turbo inlet is only so big, and BMW designed the ducting to be able to efficiently feed that turbo. Keep in the mind, the engine doesn't directly breath with the outside. It "inhales" through the turbo, so it'll only breathe as efficiently as the turbo allows it.
Direct intakes, as I've taken to calling them, like the one showtime has do have an impact, but that's due to shorter travel distance and elimination of bends. And also come with distinct downsides.
Personally, I think intakes is pretty much snake oil for our cars. There's so many other places that you can get power from (headers, turbo, fueling, meth, exhaust, etc)