DME report?

[san rensho]

DME memory also has an over-rev report, so you can see if the PO over-revved the engine, usually by downshifting while already at high rpm's.

[Homeboy981]

The numbers in each of those Ranges represent "the number of ignitions" and NOT the number of occurrences. To make one revolution, in a 6 cylinder, it would take 6 ignitions.

When I first read the report, I thought it HAD HAPPENED that many times! So, take the number given, i.e., Range 1 & 2, and divide by 6 to determine how many revs were made in that Range.

Hopefully that will shed some light. My car had Range 2 overrevs, the bad kind, but knowing that it was ignitions instead of occurrences made me feel "somewhat" better.

[paulv]

Here's what you would see with Durametric -- over rev counts with total operating hours.




The Durametric site also has info on the relationship between operating hours and miles driven for used car buyers:

http://www.durametric.com/usedporschebuyersguide.aspx


Regards,

paul...

[jb92563]

Originally Posted by Homeboy981

The numbers in each of those Ranges represent "the number of ignitions" and NOT the number of occurrences. To make one revolution, in a 6 cylinder, it would take 6 ignitions.

When I first read the report, I thought it HAD HAPPENED that many times! So, take the number given, i.e., Range 1 & 2, and divide by 6 to determine how many revs were made in that Range.

Hopefully that will shed some light. My car had Range 2 overrevs, the bad kind, but knowing that it was ignitions instead of occurrences made me feel "somewhat" better.

The over revs are just an Indication of how the car was treated.

Its not like over revs on occasion are going to kill the engine.

The fuel cutoff usually takes car of it getting too far out of hand unless something stupid happened like your going 7200 rpm in 3rd and then shift hard and fast into 1st causing the engine to go over 9000 rpm.

Even then it will not likely kill it, but you are putting a lot of stress on the parts and increasing the chances of something failing.

I have learned that if you shift down 1 gear 2000 before redline you will never exceed redline and upshifts 1000 before redline are keeping you in the best part of power band.

Just my own observations with my 2001 Boxster S.