> Lawrie,
> 
> This goes against everything I've every read about improving the air flow 
> in our MGB's.  Did you test the originals with the original paper filter or 
> did you try them with the K&N elements?  Just how do you test the 
> efficiency of an air cleaner?  This could mean very good news to me as I 
> still have the original cans that I was going to replace.  Now it sounds as 
> though I should reconsider.
> 
> Doug
Doug,
        I don't know how the filters are actually tested, either, but I 
would suspect that one could feed air through the filter at a fixed 
pressure and measure total cubic feet per minute flow.  You could 
probably even do thi in a home shop if you can isolate the inlet side 
of the filter from the outlet side.  Use a low-pressure air 
compressor on the inlet, and an empty garbage bag on the outlet.  The 
trick would be to keep the back-pressure on the inlet constant.
Scott
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