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air induction kits.. pro's / cons ?


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benefits....the car is louder! thats about it, you will gain a couple of bhp, but you won't notice any more performance other than the car being a tad smoother through the rev range.

you need to get a enclosed induction kit, like the link you have...tho most use BMC carbons on this site...as if you have an 'open' filter it'll suck in hot air (theres a lot of hot air in a vr6 engine bay) and you'll loose power.

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Yep, I've got a Ramair ProRam "open" filter, it sounds orgasmic but it's making me lose power and having an Astra 2.2 litre thingy overtake me has prompted me to put the standard airbox back on when I get a spare 10 minutes.

Another one to consider is the Carbonio induction kit, works on the same principle as the BMC I think.

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Closed means it has a heat shield around it so you can't see much of the actual filter when it's fitted, it draws the cold air in and keeps the hot air out, in principle. You'll be very lucky to find any of them for under £150 new.

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ok,

this is an 'open' induction kit -

k%20%20n%20induction%20kit.jpg

and this is a closed one -

zspipercross2.jpg

and this is the BMC one that a lot of people use on their vr6's...

cda.jpg

the closed kit is bascially a normal open kit with a cover around it. as far as i know a K & N is an open kit. you could buy an open kit and get a local machining company to knock you up a shield for it out of alu.

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I think RR figures are different to driving power as on a RR, the bonnet will be open and big fans blowing loads of cool air into your engine bay so you'll get good figures, but out driving about, there will be more hot air being sucked in and poorer performance. That's what I've found so far, looking into getting a heat shield made up for my RamAir tho.

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dont think a heat shield can work the air flow round it will be hot from the engine bay anyway the air intake will create airflow. does the bmc collect its air from under the wing A/C . and it works as we know so the heat doesnt soak into the carbon canister.

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