Hi, received this DME report for a car I'm considering. Is there more to the report I should be seeing?

Looking for track time/abuse/over revs etc since it's a manual. What kind of a life did this car have?!




Thanks

 

bump

 

What are the total operating hours?

What is the current mileage?

How many Counter Start Cycles?

1s and 2s are normal, and low in ignition values. I don't like seeing 3s.....but yours happened a while ago, so that's good.

 

Thanks for the reply. Dont have total operating hours but will request.

Current mileage is 4950.

On the Carerra T does zone 3 indicate 7700-7900 RPM?

 

Range 1 is about 7,600-7,800
Range 2 is about 7,800-8,100
Range 3 is about 8,100-8,400

I don't have my source available at the moment, so I'm going from memory. These are close. Redline is 7,600.....and each additional bump is about 200-300 RPM.

 

DME reports only give a picture of the life a car lived. A car could have a perfectly clean DME report and have been up near redline on cold oil. That is a clean enough report that if everything else checks out I would go for it.

As mentioned you would want total operating hours in there as well.

 

Hypothetically, if this car has a Total Operating Hour close to the last Range #1 over-rev, this car has a very-very low average miles per hour:

4950 / 314.63 = 15.7 mph

This points to a car that was; driven short trips, and more city traffic vs highway traffic. Also shows it was NOT a car that lived on the track.

 

Thanks guys, exactly what I wanted to hear. Was told this was a Porsche execs car but wasnt sure if that meant demo car too... seems like the story checks out.

 

Check this.

Quick post as for some miraculous reason my wife and son are still asleep.

I look for the usual over revs but also for service hours and times the car has been started. What I do is to divide the miles by number of starts. A car with low miles per start may not be ideal as it probably never got to warm up real well in most circumstances. i.e., saw a very nice 2015 with under 10k which had an average trip of less than two miles.

Also, I divide miles by service hours to get a sense for type of driving. Saw a car with an average speed of less that 8 miles. Probably a stop and go car with 20k miles .... or it just sat in the garage warming up before it was driven.

My previous 997 had an average trip of 27 which was very consistent with my boss’ boss commute. The average speed was low 30s. Had 48k miles but very low cycles and drove like a 10k mile car.

My new (to me) C4S has an average trip of 5.8 miles and an average running time of close to 17 minutes if I recall correctly. Average speed in the low 20s. I was able to confirm with previous owner that she drove it across suburbs to work three times a week. Did I mention 0 over revs in 1 or above?

Finally on the 991.2, saw a bunch with plenty over revs in 3 (with PDK) but because none on 4 (or above) they where CPO. Here I was able to figure many of these have been tuned and the tune allows for a higher red line. Saw an immaculate one with less than 5k but with almost 3,000 in rev 3 with very high starts and low operating hours. When I asked a bit more identified a previous owner who loved to hit the rev limiter every morning on every light. Car was fine but wonder how that engine will do down the road.

The math may no be exact, but there is more to these numbers. They tell you a story.

PS. On a PDK they won’t share with you because “it is a PDK and it can not over rev”. Somewhat true by a non modified PDK car should have very few in 1 and less in 2. Never in 3 .... yet many have them.

Also, they mostly won’t share the start cycles as most sales guys have no clue. Ask and ask. They will eventually share.

https://rennlist.com/forums/997-forum/1164290-how-to-read-dme-report-my-way.html#post16154715https://rennlist.com/forums/997-forum/1164290-how-to-read-dme-report-my-way.html#post16154715

 

Is it difficult to over-rev on a PDK car?

 

Yes. But possible. We've seen a few limited examples on Rennlist. Never in Range #3 though. 1s for sure. 2s very rarely.

 

Will dealers provide this report if asked while the car is in for service? Diagnostic charge? Do most independent mechanics have the tool needed to generate the report? I’m curious to see one for my T.

 

I picked up my car 2 year old CPO and one of the selling points the dealer kept mentioning was "no over revs!"

Pretty sure they can pull it upon request.

 

A good Indy that lots of business will be able to do it for you and a good dealer will do it for free.

 

Appreciate the feedback.