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Old 12-30-2011, 12:07 AM
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supercharger air cleaners?

Hey everyone,

Does anyone know of any dyno charts or have any first hand knowledge of air filter sizes vs HP for supercharged engines? I notice most everyone running a blower has the tiny air filters (probably cause they look cool) I would assume you would want to run the biggest and most free flowing filter you could.

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Old 12-30-2011, 12:36 AM
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Imo the bigger the better, my brother has a supercharged falcon and started out with the factory flat looking one witch wasn't to bad, but when he switched to a k&n pod i think it gained about 10 more kilowatts and gave it a throatier noise. I'd go with the bigger ones, Ill try find the dyno sheets to show you as-well
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Old 12-30-2011, 09:18 AM
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I have a BDS scoop and 2 K&N filters that go with it. 18k miles and they work great. I just took the blower and intake off to replace the gaskets and the manifold was dead clean inside. As for efficiency well on the street if you can make a 10 sec charge and get caught by the trooper air cleaners will be the very least of your worries. If you want to take them out at the track, fine go ahead, but not necessary for a streetrod.

I did have the small paper ones on for a week at first but I don't think I'd use them daily. I wash the elements out about every 500 miles or less. Doggon dragon flies can really pile up.. haha

The scoop also works in the rain and even light snow....yes I drive when I feel like regardless of weather. Very little water gets in the scoop and none in the carbs. I mean just how hard do you want to step on it in a rain storm???
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Old 12-30-2011, 03:48 PM
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I would want to run at least 176 square inches of element area (14" X 4") or the equivalent in two elements.
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Old 12-31-2011, 02:43 PM
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I chased a problem on my T-Bucket with a blower, turned out the air filter was to restrictive. It would just die at 4500 rpm
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Old 12-31-2011, 05:03 PM
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A lot of guys run the Hilborn style which is much shorter and that perforated screen is surely more restrictive than the BDS style scoop. Mine sure doesn't choke. Calculate the open area of the screen sometime then add the air cleaner behind it.
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