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View Poll Results: Has your Boxster sustained a IMS failure, requiring engine replacement?
No:1997-1999 MY 16 25.00%
Yes:1997-1999 MY 2 3.13%
Yes-multiple failures: 1997-1999 MY 0 0%
No: 2000-2004 MY 43 67.19%
Yes: 2000-20004 MY 4 6.25%
Yes-multiple failures: 2000-2004 MY 0 0%
Multiple Choice Poll. Voters: 64. You may not vote on this poll

 
 
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Old 11-25-2011, 04:14 PM   #10
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Join Date: Aug 2005
Location: Sanford NC
Posts: 2,568
The "spirited" theory arose, IIRC, from comments by Jake early in the "IMS-is-a-problem" history when he observed that frequently driven and spiritedly driven cars seemed to have less IMS failure problems.

My guess is that frequently and spirited result in warm oil being splashed at higher temps and pressures, less condensation in the oil or perhaps the inner seal is kept more flexible/effective.

Don't know if he still feels the same way nor do I know of any statistical study on the subject.
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