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Would this DME data concern you?

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Old 11-04-2009, 06:26 PM
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dovpcar
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Default Would this DME data concern you?

This is my first 911 so need the help
Just got a PPI done and here is the DME data,
This is on a '08 C2S with 5k miles
# of ignitions, range 1: 495 (186.1 h)
# of ignitions, range 2: 134 (186.1 h)
# of ignitions, range 3: 47 (186.1 h)
# of ignitions, range 4: 5 (186.1 h)
# of ignitions, range 5: -- (186.1 h)
# of ignitions, range 6: -- (186.1 h)

Your thoughts would be much appreciated
Old 11-04-2009, 06:27 PM
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dovpcar
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actually looked like this...
# of ignitions, range 1: 495 (186.1 h)
# of ignitions, range 2: 134 (186.1 h)
# of ignitions, range 3: 47 (186.1 h)
# of ignitions, range 4: 5 (186.1 h)
# of ignitions, range 5: -- --
# of ignitions, range 6: -- --
Old 11-04-2009, 07:02 PM
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996toomey
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Probably not. How many hours are on the car now?
Old 11-04-2009, 07:03 PM
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Bob Rouleau

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Ask the dealer whether he would CPO that car. That's a very good test.
Old 11-04-2009, 07:21 PM
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Edgy01
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Originally Posted by dblieberman
actually looked like this...
# of ignitions, range 1: 495 (186.1 h)
# of ignitions, range 2: 134 (186.1 h)
# of ignitions, range 3: 47 (186.1 h)
# of ignitions, range 4: 5 (186.1 h)
# of ignitions, range 5: -- --
# of ignitions, range 6: -- --
I wouldn't worry about these numbers. They say that accumulating them in ranges 5 and 6 present Porsche with a route to avoiding warranty coverage.
Old 11-04-2009, 11:18 PM
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OldGuy
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I havent a clue what the data means. Can anyone explain it?
Old 11-04-2009, 11:30 PM
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RonCT
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I don't remember the exact RPM limits, but there are lots of threads / posts that give the details (some I posted after I did my research). Range 1 is something like Redline to + 200 RPM or something like that. My test (like Bob's) is what the dealer's position will be regarding warranty coverage knowing the car has seen a little time over redline. If his position is "no problem, Porsche will cover it" and I get that in writing... When I purchased a CPO car it had a few Range 1 and 2. No big deal, but I had the selling dealer attach the DME readout as an exhibit to the contract. By the way, there are 3 ignitions per RPM (Boxer 6, so 2 fire at a time, 3 firings per revolution). So if it says 495 ignitions, that's only 165 revolutions. Say we're talking about 7500 Revolutions per minute, that's 125 revolutions per second. So at 165 revolutions at about 7500 RPM, we're only talking about just over 1 second that the engine spent a few hundred RPM over redline. Insignificant...

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Old 11-04-2009, 11:33 PM
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ford_jj
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Smile what is the CPO mean?

Originally Posted by Bob Rouleau
Ask the dealer whether he would CPO that car. That's a very good test.
I 'm a test engineer for Wheel Loader.
Old 11-05-2009, 02:27 AM
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fpb111
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Certified Pre Owned. It is a warranty backed by Porsche on used P-cars.
Old 11-05-2009, 09:01 AM
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I would PASS on that car right now. There are sooooo many Porsche for sale without this kind of history. There should NOT be any ignitions in range #4. Porsche will not CPO that car. They will probably void the warranty.

A 997-1 DME records the following rev ranges:
Range 1: 7300-7500 RPM
Range 2: 7500-7700 RPM
Range 3: 7700-7900 RPM
Range 4: 7900-8400 RPM
Range 5: 8400-9500 RPM
Range 6: 9500-11000 RPM

I would guess that car was either spun or had a missed down-shift.

DO NOT BUY THAT CAR!
Old 11-05-2009, 03:24 PM
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dovpcar
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OK thanks for all the advice.



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