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.

 

ANYTHING in range 4 thru 6 would scare me so in this case, I would pass. A couple of threads on DME scans here on 6speed and I think the agreement from most is the same.

 

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

 

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.

 

exactly what i needed to learn .. how to read a DME ! thx a ton !

 

Thanks Ian_UK1, i appreciate your help

 

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.

 

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!

 

with so many clean DME scans out there because there are so many P-Cars used out there, I would pass.

 

the problem here is, the 2nd owner bought the car from dealer as cpo and the overrevs happened AFTERWARDS. so if OP is really interested in this car, bring it to the dealer and ask them about this situation. what is the asking price anyway?

 

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

 

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.

 

yeah, it makes sense to focus on another brand. those never get overrevved.

 

Not so much that, remember, IMS, RMS etc,etc,etc, I am not new to the brand, just new to buying used.