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DIY cold air intake (need comments)
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<blockquote data-quote="NismoGTR34" data-source="post: 2010332" data-attributes="member: 47201"><p>also, try not to have the opening for the CIA to low from the highest point.</p><p></p><p>eg. air comes in at the bottom of the bumper and needs to travel upwards 400mm to reach its destination.</p><p></p><p>reasoning for this, is the higher u need to raise the air flow the more resistance. i encounter this daily in my job, doing comercial and industrial air conditioning.</p><p></p><p>so, some things to keep in mind:</p><p></p><p>1: keep the CIA duct run as straight as possible, bends are all good, as long as they are smoothe. a simple formular we use at work. if the duck size is 100mm diamater, the bend should not be sharper than twice the diamater. so in this case. 200mm/90 degree bend. but looking at your picture, i dont forsee any problems in the bends.</p><p></p><p>2: keep the run as flat as possible, this allows less resistance inside the CIA and will have a greater enhancement after the mod. if necessary, try to make a air scoop to push the air upwards before entering the CIA. reason being that air inside the CIA only has one place to go. outside here, air can be manupilated more and scooping the air upwards will have a better effect that running the CIA along the same route.</p><p></p><p>but remember at the end of the day, the engine will only take a certian ammount of air into the engine. no matter how effective the CIA.</p><p></p><p>hope this helps</p></blockquote><p></p>
[QUOTE="NismoGTR34, post: 2010332, member: 47201"] also, try not to have the opening for the CIA to low from the highest point. eg. air comes in at the bottom of the bumper and needs to travel upwards 400mm to reach its destination. reasoning for this, is the higher u need to raise the air flow the more resistance. i encounter this daily in my job, doing comercial and industrial air conditioning. so, some things to keep in mind: 1: keep the CIA duct run as straight as possible, bends are all good, as long as they are smoothe. a simple formular we use at work. if the duck size is 100mm diamater, the bend should not be sharper than twice the diamater. so in this case. 200mm/90 degree bend. but looking at your picture, i dont forsee any problems in the bends. 2: keep the run as flat as possible, this allows less resistance inside the CIA and will have a greater enhancement after the mod. if necessary, try to make a air scoop to push the air upwards before entering the CIA. reason being that air inside the CIA only has one place to go. outside here, air can be manupilated more and scooping the air upwards will have a better effect that running the CIA along the same route. but remember at the end of the day, the engine will only take a certian ammount of air into the engine. no matter how effective the CIA. hope this helps [/QUOTE]
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