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Not too sure, my mate just sits it behind the grill as opposed to being hung just slightly below the front bumper. This was a pain in the arse as when he went through a puddle the water travelled straight up the fookin pipe into the filter.

Nice
 

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Gordy said:
As long as cold air goes up her (no comments) then it doesnt really matter where she goes!!
Unless you have the inlet pipe facing directly into the airflow or, like the OE intake, in a 'dead' area (behind the bumper in this case) you may well suffer from a "venturi" effect which will be counterproductive.

If the pipe is perpendicular to the airflow then instead of forcing the air in, it will blow across the top causing a suction (same principle that a carburettor works or some cheap spray guns), the less you can make this angle the better, plus any that just hang down into the engine bay or just below can suffer the same as there is a depression under the car when it is travelling caused by the aerodynamics.

Just a couple of things to consider when siting the intake pipe.
 

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go under the car mate. coldest air is next to the road. My cold air feed is down just behind the bumper, below the line where it bolts to the chassis.
 
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