Thread: CAI on a wrx
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Old 02-03-2005, 11:20 AM   #17
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Join Date: Apr 2001
Chapter/Region: VIC
Location: Vancouver
17 Ford Escape SE


Originally Posted by 420WRX
Yeah? I guess if rally guys intentionally inject water, the occasional dose of rain water can't be so bad?
Think of it this way....a lot of smaller planes (Cessna and others) will use subaru flat fours as their engines. These are locomacated right in the front and have basically direct air intake from right in front. These planes fly at reasonably high speeds (in comparison to our cars) and rain goes right into the filter and then into the engine. But with that amount of water the rain turns to mist and is all but gone by the time it get's past the throttle body, it does no damage to the engine. You really have to submerse it with a WASH of water before damage will result. That being said, a CAI that goes right to the bottom of the fender well, or "close" to the road is not a good idea in places that have lots of big puddles....if you hit a puddle and submerse the filter, or even rocket a big splash into it driving through a large puddle you will be prone to hydro-lock.
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