I could use some input from the resident experts out there on what is an acceptable range from a DME report I recently received. I found a 2007 997 turbo I am interested in with miles in the mid 20K range. It has a few mods on it including a tune. All stock internals. I had the Porsche dealer do a PPI inspection for me and other than a few typical small maintenance items, it checked out OK. I also had them run a DME report and that however raised some potential concerns to me based on the information in this and other threads her and on Rennlist I reviewed. The report is as follows:

Range 1 over-revs 24,286 last time at operating hours of 1327
Range 2 over-revs 6,431 last time at operating hours of 1327
Range 3 over-revs 2,394 last time at operating hours of 1327
Range 4 over-revs 981 last time at operating hours of 1326
Range 5 over-revs 10 last time at operating hours of 1267
No Range 6 over-revs

According to the Motor Over-Speed Ignition Ranges from Porsche, Range 1 is 6,800 - 7,000 RPM, Range 2 is 7,000 - 7,200 RPM, Range 3 is 7,200 - 7,400 RPM, Range 4 is 7,400 - 7,900, Range 5 is 7,900 - 9,000 RPM and Range 6 is above 9,000.

The redline is 6,750 RPM from the factory and the over-revs are defined 50 RPM about that starting in Range 1. The rev limiter is set 500 RPM above that. Nearly all cars will have some range 1 and range 2 over-revs. This car appears to have been driving very hard up to and often exceeding the redline frequently. From my understanding, a flash tune can increase the redline somewhat but I'm frankly not sure how much. The DME report here has me concerned and I would greatly appreciate if those experts out there could chime in on this for me. I'm in a holding pattern until I become a bit more educated about this. It is not a CPO car and while the Porsche tech said the car is running very strong, I'm concerned about the high frequency of over-revs and also obviously those in the upper ranges. While 10 ignitions is immaterial and occurs over a split second, there were 10 ignitions at range 5 which could have been anywhere from 7,900 - 9000 RPM, significantly in excess of the redline. I've seen and heard others say that they would pass on cars with any ignition readings above Range 3 and others I have looked at have 10% of these readings in Ranges 1-2 and none after that.

Any insightful advice / guidance would be very much appreciated. Thanks

 

Range 5 over 1200 hours ago? You should be good.

 

No range 5 is only about 60 hours ago. What about the level of over-revs and those specifically past ranges 1-2?

 

I don't think range 5 was 1200 hours ago.

What is the total operating hour count on this car? Given that that the car only has ~25K miles, even if total op hour count 1327 this car has been driven at very leisurely speeds (on average). I would read that as a "stop and go" sort of car. Ideally you wouldn't want the higher range overrevs recently, and you can't tell what is recent without a total operating hour count.

This car is tuned right?

You'll find different opinions when it comes to DME reports. If these findings scare you, walk away. If not and upon a thorough PPI and test drive you are comfortable with the car, use this DME info as a bargaining tool.

 

Right . we need total hours run time to calculate how long ago the last detection. I see 60 hours between range 3 and 5. Range 1-4 is perfectly fine, even 5 depending how many hours ago.