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               Originally Posted by 
              Kev  
              Remove snorkel. Drill 5x 28mm holes extra holes, plug up side holes using vent caps.
              
 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, without the out lay of a DNA stage 2 filter.
 
 Remember to clean out the airbox well.
 
 You will need to adjust the fuel injection richer, using a power commander or the Kev Fueling Mod.
 
 
 Works well for me.
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         Hi can you please help I have made the fueling mod looking to do the 4 holes but reading this I need to do 5, one more extra hole can you please pont out the extra hole? oh and what is this about ? (plug up side holes using vent caps) is this the 4 holes that I have not done yet?