Another need help with DME scan thread
#1
03-02-2010, 09:50 AM
Join Date: Jan 2004
Location: Venice, Florida
Posts: 687
Rep Power: 57 
Another need help with DME scan thread
I am looking at an 06 CPO cab with 32k miles DME scan as follows:
# of ignitions, range 1 1338 1231.8h
'' '' '' '' '' range 2 243 1231.8h
'' '' '' '' '' range 3 52 1193.2h
'' '' '' '' '' range 4 10 1193.2h
'' '' '' '' '' range 5 2 1193.2h
'' '' '' '' '' range 6 -- -------
Current operating hrs: 1284.200
It's a 2 owner car, second owner purchased it from the dealer who is currently selling the car and had it serviced there as well. Any opinions are welcome. Thank you.
# of ignitions, range 1 1338 1231.8h
'' '' '' '' '' range 2 243 1231.8h
'' '' '' '' '' range 3 52 1193.2h
'' '' '' '' '' range 4 10 1193.2h
'' '' '' '' '' range 5 2 1193.2h
'' '' '' '' '' range 6 -- -------
Current operating hrs: 1284.200
It's a 2 owner car, second owner purchased it from the dealer who is currently selling the car and had it serviced there as well. Any opinions are welcome. Thank you.
#3
03-02-2010, 10:18 AM
I am new to the thread and am very unfamiliar with the DME scan. Can you give me the quick and dirty on how to read these numbers. I am currently looking for a 07 tt.
thanks in advance
thanks in advance
#4
03-02-2010, 10:46 AM
I am looking at an 06 CPO cab with 32k miles DME scan as follows:
# of ignitions, range 1 1338 1231.8h
'' '' '' '' '' range 2 243 1231.8h
'' '' '' '' '' range 3 52 1193.2h
'' '' '' '' '' range 4 10 1193.2h
'' '' '' '' '' range 5 2 1193.2h
'' '' '' '' '' range 6 -- -------
Current operating hrs: 1284.200
It's a 2 owner car, second owner purchased it from the dealer who is currently selling the car and had it serviced there as well. Any opinions are welcome. Thank you.
# of ignitions, range 1 1338 1231.8h
'' '' '' '' '' range 2 243 1231.8h
'' '' '' '' '' range 3 52 1193.2h
'' '' '' '' '' range 4 10 1193.2h
'' '' '' '' '' range 5 2 1193.2h
'' '' '' '' '' range 6 -- -------
Current operating hrs: 1284.200
It's a 2 owner car, second owner purchased it from the dealer who is currently selling the car and had it serviced there as well. Any opinions are welcome. Thank you.
The 6 overrev ranges are:
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
The numbers recorded in the overrev data are numbers of ignitions that took place whilst the engine was in that rev range. A 6 cylinder motor fires 3 cylinders per revolution so the engine spent 2/3rds of one revolution in Range 5 (or about 0.005 of a second) 3 1/3rd revolutions in Range 4 (or about 0.025 of a second) and 17 1/3rd revolutions in range 3 (about 0.14 of a second).
So whilst the engine was over-revved quite hard, it was for such a short amount of time that it probably won't have hurt the motor at all.
Last edited by Ian_UK1; 03-02-2010 at 10:50 AM.
#5
03-02-2010, 11:44 AM
This car has had one badly-missed downshift and fairly recently by the look of the data. Most cars seem to average around 30mph over a lifetime. This example has done 32000 miles in 1284 hours so it has averaged 24.9 mph - perfectly believable. Given the same average, the gearchange was missed at about 29700 miles.
The 6 overrev ranges are:
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
The numbers recorded in the overrev data are numbers of ignitions that took place whilst the engine was in that rev range. A 6 cylinder motor fires 3 cylinders per revolution so the engine spent 2/3rds of one revolution in Range 5 (or about 0.005 of a second) 3 1/3rd revolutions in Range 4 (or about 0.025 of a second) and 17 1/3rd revolutions in range 3 (about 0.14 of a second).
So whilst the engine was over-revved quite hard, it was for such a short amount of time that it probably won't have hurt the motor at all.
The 6 overrev ranges are:
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
The numbers recorded in the overrev data are numbers of ignitions that took place whilst the engine was in that rev range. A 6 cylinder motor fires 3 cylinders per revolution so the engine spent 2/3rds of one revolution in Range 5 (or about 0.005 of a second) 3 1/3rd revolutions in Range 4 (or about 0.025 of a second) and 17 1/3rd revolutions in range 3 (about 0.14 of a second).
So whilst the engine was over-revved quite hard, it was for such a short amount of time that it probably won't have hurt the motor at all.
#7
03-02-2010, 01:18 PM
but the overrevs happened very recently, if god forbids this car gets ims/rms problems, correct me if i'm wrong, the dealer can void the cpo because of the range 5 scan.
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#8
03-02-2010, 02:04 PM
) stating the noted over-revs occurred (to this point) prior to vehicle being CPOd. This would imply they will stand behind it if any problems occurred since they knew of the over-revs and disclosed it as essentially not material to the over-all mechanical well being of the car. However, in the event something did happen, you should expect a major league fight regarding the vehicle not being abused and that's if w/in the CPO window. If you're outside of the CPO window, I think you'd pretty much be limited to only wiping your keister w/ that letter...
Thus why the common recommendation is to steer clear of vehicles w/ Range 4 and above over-revs.
Good luck in your search!
#10
03-02-2010, 02:56 PM
Not sure it would be iron clad or not, but if you are really interested in the car, you might try to get the dealer to sign a letter (on their Porsche letterhead of course ) stating the noted over-revs occurred (to this point) prior to vehicle being CPOd. This would imply they will stand behind it if any problems occurred since they knew of the over-revs and disclosed it as essentially not material to the over-all mechanical well being of the car.
However, in the event something did happen, you should expect a major league fight regarding the vehicle not being abused and that's if w/in the CPO window. If you're outside of the CPO window, I think you'd pretty much be limited to only wiping your keister w/ that letter...
Thus why the common recommendation is to steer clear of vehicles w/ Range 4 and above over-revs.
Good luck in your search!
) stating the noted over-revs occurred (to this point) prior to vehicle being CPOd. This would imply they will stand behind it if any problems occurred since they knew of the over-revs and disclosed it as essentially not material to the over-all mechanical well being of the car. However, in the event something did happen, you should expect a major league fight regarding the vehicle not being abused and that's if w/in the CPO window. If you're outside of the CPO window, I think you'd pretty much be limited to only wiping your keister w/ that letter...
Thus why the common recommendation is to steer clear of vehicles w/ Range 4 and above over-revs.
Good luck in your search!
#11
03-03-2010, 01:54 AM
Unfortunately you can't rely absolutely on these DME readouts. As with 99% of all current cars, anyone with a suitable chip reader/writer can alter the recorded mileage/total running hours and zero out the overrev counters in less than 20 minutes - and the results will be completely undetectable.
#12
03-03-2010, 04:42 AM
Registered User
Join Date: May 2008
Location: deep inside my other half
Posts: 2,295
Rep Power: 0 Unfortunately you can't rely absolutely on these DME readouts. As with 99% of all current cars, anyone with a suitable chip reader/writer can alter the recorded mileage/total running hours and zero out the overrev counters in less than 20 minutes - and the results will be completely undetectable.
no crap.....seriously , I had no clue of this!
Heh, u learn somthin new every day
#13
03-03-2010, 06:28 AM
Join Date: Jan 2004
Location: Venice, Florida
Posts: 687
Rep Power: 57
The more I find out about this, the more I am starting to not want one and turn my efforts towards another brand. I am going to pass on this one for sure. Thanks for all of the help, especially Ian. I appreciate it.
