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			Since these cut the air flow by 30% (?), they also reduce the the amount of heat the radiators can remove.  Might be a problem the next time it's 113 degrees outside and you are climbing mountains at 75 mph. (Just had to do this last week).
		 
		
		
		
		
		
		
			
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				1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel 
2001 Boxster original owner.  I installed used motor at 89k.  
1987 924S.      2002 996TT.        PST-2 
Owned and repaired Porsches since 1974.  Porsche: It's not driving, it's therapy.
			 
		
		
		
		
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