Ernest, My first intake utilized an air-filter bypass, or "ram air" as I liked
to call it.  When open, it would only produce .1 to .2" MAP in flight.
 Hardly worth the effort.  Mark S.

On Wed, Jun 20, 2012 at 7:54 PM, Ernest Christley <echristley@att.net
<mailto:echristley@att.net>> wrote:

    Assuming you have an air filter installed, what sort of MAP drop can
    you expect at around 5000RPM with the throttle wide
    open?

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