Would this DME data concern you?

dovpcar · 11-04-2009, 07:26 PM

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

dovpcar · 11-04-2009, 07:27 PM

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: -- --

996toomey · 11-04-2009, 08:02 PM

Probably not. How many hours are on the car now?

Bob Rouleau · 11-04-2009, 08:03 PM

Ask the dealer whether he would CPO that car. That's a very good test.

Edgy01 · 11-04-2009, 08:21 PM

Quote:

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.

OldGuy · 11-05-2009, 12:18 AM

I havent a clue what the data means. Can anyone explain it?

RonCT · 11-05-2009, 12:30 AM

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...

ford_jj · 11-05-2009, 12:33 AM

Quote:

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.

fpb111 · 11-05-2009, 03:27 AM

Certified Pre Owned. It is a warranty backed by Porsche on used P-cars.

No HTwo O · 11-05-2009, 10:01 AM

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!

dovpcar · 11-05-2009, 04:24 PM

OK thanks for all the advice.

11-04-2009, 07:26 PM	#1
dovpcar Addict Rennlist Member Join Date: Jun 2009 Posts: 29	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

11-05-2009, 12:18 AM	#6
OldGuy Addict Lifetime Rennlist Member Join Date: Jun 2003 Location: Ridgecrest, and Mammoth California Posts: 7,848	I havent a clue what the data means. Can anyone explain it? __________________ OG 997 09 C2S PDK Carrera White Rennlist member# 030815-4002 Official NRA Liason to Sierra Club HWFMR paulgt3@gmail.com 2008 BMW 335i (wifey's) 2006 BMW X5 4.8iS 04 GT3 RSR Le Mans entrant Gone 97 993 TT midnite blue/cashmere(missed) 04 RED 996 GT3 2007 GT sliver GT3 2009 AMG C63

11-05-2009, 12:30 AM	#7
RonCT Moderator Rennlist Member Join Date: Oct 2004 Location: Connecticut Posts: 3,497	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... __________________ 2009 C2S Aqua Blue, Sport PASM / LSD, Cup Control Arms, PFC97 / SRF, Volk TE37 18" w/ RA1s, GT2 seats, Tequiptment bar, Schroth Profi II-H. 2007 GT3 Arctic Silver, bone stock. 2007 C2S Cobalt Blue, Cup Control Arms, PFC97s / SRF, Fikse 13 w/ RA1s. 1992 C2 Race Modified.

11-05-2009, 03:27 AM	#9
fpb111 Addict Rennlist Member Join Date: May 2008 Location: Northern NJ Posts: 169	Certified Pre Owned. It is a warranty backed by Porsche on used P-cars. __________________ 1972 RS 3.2 twin plug short stroke crank fire, roll bar, camber truss, factory short shift, turbo brakes sadly sold 2003 996 cab 6 speed happily bought 22 year PCA instructor Past NNJR social chair, past rally chair, past fresh sell by date Frank

11-04-2009, 07:27 PM	#2
dovpcar Addict Rennlist Member Join Date: Jun 2009 Posts: 29	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: -- --

11-04-2009, 08:02 PM	#3
996toomey Addict Rennlist Member Join Date: Oct 2004 Location: Stevenson Ranch, CA Posts: 1,201	Probably not. How many hours are on the car now?

11-04-2009, 08:03 PM	#4
Bob Rouleau Administrator Still plays with cars. Lifetime Rennlist Member Join Date: Jul 2001 Location: Montreal Posts: 7,831	Ask the dealer whether he would CPO that car. That's a very good test. __________________ ..Bob Frozen North Rep & ceramic rotor roaster Hey, wait for me! racing.

11-05-2009, 10:01 AM	#10
No HTwo O Addict Rennlist Member Join Date: May 2008 Posts: 868	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!

11-05-2009, 04:24 PM	#11
dovpcar Addict Rennlist Member Join Date: Jun 2009 Posts: 29	OK thanks for all the advice.