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Paul,  go to http//www.n55xs.com and then to the June 26, 2004 entry to 
see what I did to solve the pressurization problems.  I get excellent 
air flow and there is a slight positive pressure in the aft of the fuse, 
which keeps any stray exhaust from entering through the flap holes...
Jeff - N55XS
89 hours...
Paul McAllister wrote:
>
>Mike,
>
>Many people, including myself have discarded them.  I put a heat box on the 
>firewall and brought the air in through the panel.  It works okay, quite 
>frankly it would work much better if I could come up with a good system of 
>getting the air out of the cabin.  I am waiting for someone else to come up 
>with a flight proven solution for that one.
>
>Paul 
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