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Re: Curious---How does air get to the cone? (archive)

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Posted by Joseph on January 13, 2001 at 18:43:46:

In Reply to: Curious---How does air get to the cone? posted by Dan Latta on January 13, 2001 at 15:04:54:

I had that problem with the K&N filter charger system. In winter it was fine, in summer in stop and go traffic, forget it!

The cone suck hot air right from the manifold. I went with a replacement K&N filter for the regular housing.


The engine bay is pretty closed off except for air that drags underneath the car. The air near where the cone is presumably is warmer from the heat of the engine.

Would a rectangular airfilter that would sit in the the stock housing work better? It would make sense that it would since it was designed for air to flow through as a cone that sits alone. A cone seems like it uses the available air around it instead of the stock square box that was designed to have air flow through it.

I know from some experience with the Fox based 5.0 Mustangs that the cone generally was coupled with some type of inlet to allow some air into the engine compartment. Maybe I'm missing info about more air getting into the engine compartment but it seems like the big square K&N would be more effective.

Just a guess from a seriously rank amateur who knows nothing about engines, etc. Don't take my opinion seriously, just posing a question.

Dan Latta
'87 535is
'89 325is
'00 ML320

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