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               Originally Posted by 
              Kev  
              The air filter area is = 9768mm sq the snorkel hole area removed = 4000mmsq by adding 5x extra breathing holes you are able to use the full effect of the STD filter size
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         The free area of the filter would be more relavent than the filter area wouldn't it?
         
        
 Mine has Staintunes, DNA stage 2 and a PC.
         
        
 I just removed the snorkel and de-screened the filter.
        
 The motor is smoother at light throttle and is getting better economy.
         
        
 Anyone else tried de-screening the filter?