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Old 12-19-2011, 01:12 PM   #4
thstone
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
There are several issues to consider regarding the Boxster intake design:

1. Foreign particle ingestion - design should allow large particles/items (dirt, pebbles, leaves, cig butts, etc) drawn into the air intake to "fall out" of the air flow prior to the air filter
2. Water ingestion -- design should allow any water drawn into the air intake to "fall out" of the air flow prior to the air filter (including driving in heavy rainfall, carwash jets, solid splash of water from car in next lane, etc)
3. Intake noise - if needed, help meet overall noise standards
4. Performance - meet engine performance standards
5. Cost - meet (or be less than) the cost goal
6. Packaging (space limitations) - fit into the allocated space
7. Ease of assembly - easy to assemble in the factory
8. Maintainability - does not require periodic maintenance
9. Durability - long lasting
10. Repairability - easy to remove and replace

Based on all of these (and many more) criteria, the Porshe engineers came up with the design as implemented and as such, it is sure to be a compromise between performance and the other criteria.
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1997 Spec Boxster BSR #254
1979 911 SC
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