I agree with the OP, when the AC is on I really notice the difference in power but the interior cools down quickly and completely so I'm happy to trade off a bunch of power for a continuous stream of ice cold air on a hot summer day!
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor