Ah okay, based on this, I see that the left value is the total number of ignitions over time, and the right value is the "hour index" for when it happened. Meaning e.g. it was overreved in range 1 recently, but hasn't reached range 4-5 in the last ~300 hours.

How to read over rev report? - 6SpeedOnline - Porsche Forum and Luxury Car Resource

997 Turbo / GT2 - How to read over rev report? - Can any one explain how to read the report and what is in the range of acceptable. Thanks

www.6speedonline.com

What is the rpm range for each range on a 2006 Cayman S?

 

Range 1 - 7200-7500 (7300 - 7500 for 911)
Range 2 - 7500-7700
Range 3 - 7700-7900
Range 4 - 7900-8400
Range 5 - 8400-9500
Range 6 - 9500 and up. This occurs when the engine is mechanically overreved by shifting into a lower gear and mechanically exceeding the rev-limiter.

http://www.durametric.com/troubleshooting-Porsche-9x7.aspx

Okay I guess I eventually found everything I needed on my own lol.

 

Number of ignitions / 3 = number of engine revolutions
Number of revolutions / by rev limiter = minutes spent at limiter
Minutes spent at limiter x 60 = seconds spent at limiter.

Porsche rev range activity | engine over revs explained by 911virgin

Understanding Porsche rev range activity. A detailed guide from Porsche specialist dealer 911virgin based in Uxbridge, West London

911virgin.com

 

So, number of seconds spent in each range:

Range 1 (s)	140.39
Range 2 (s)	9.43
Range 3 (s)	1.62
Range 4 (s)	0.29
Range 5 (s)	0.01
Range 6 (s)	0.00

A previous owner must have missed a gear and caught it within 2 seconds.

 

Mechanical over rev on a missed downshift....bet that was sphincter pucker inducing!!! ZING!!!!!

 

Generally, range 4 or higher is where you start worrying. However, the overrevs in this range were both a long time ago and limited in time, so I'd say there's not much risk of issues from this report.

For reference, I had some range 6 on my car, but they were 800 hours prior, so people said to not worry about it. My car has been running great for 3 years now... knock on wood!

 

I bought a ThinkDiag for my new (to me) 2009 Cayman S. I plan on doing most of the maintenance myself, so resetting service lights was one reason, the other being able to code changes like opening a window when I open the rear hatch.

Anyway, I ran the DME Over Rev report and like most, am not sure what I'm seeing and would like some confirmation. It appears to be a very good report. Almost to the point that I wonder if I did something wrong. I haven't figured out how to export yet, so here's some screenshots. What say you?

 

Overrev report is easy to read. Basically, you only have 263 ignitions in range 1, and the last one happened at 2838h of the engine life. There is a value somewhere else that tells you what the current time (age) is... and you use that to compare with the above time to know how long ago that was, approximately.

If you had higher ranges, there would be more to dive into, but range 1 is basically when you just approach or bounce off the rev limiter. In other words, it's not a big deal to have those, so don't worry about them. The rest of yours are 0, so it's never gone past that.

Is this a manual trans car? If so, it wasn't "money-shifted" ever (ie, downshifted with too much speed for the gear). A PDK may show numbers like this as well, since it will never allow a "money shift".

In the end, nothing to worry about here.

 

Thanks for taking a look and replying. When I saw the zeros for ranges 2-6 I wondered if I ran the test wrong.

The car is a 6MT and I've only had it for about a month. In that short time I have not "money-shifted ". Good to know in its 15 year life it doesn't appear to have been abused (at least by overreving).

 

When I bought my car, it had like 61 ignitions in range 6. But they were over 800 hours before I saw the car, and it ran great and the PPI showed it was great as well. So, just because you have higher items doesn't NECESSARILY mean that the car is toast. It only takes one money-shift to do that, after all.

My car now has another 30k miles on it, and is still running great. No oil consumption either.

IMO the only reason the overrev report would be a problem is if you sell the car. Honestly, this is my favorite car EVER. I have NO desire to sell it, so I don't care what my overrev shows, nor have I bothered with PPF... I plan to keep this car forever!

 

Hello Everyone, New here. Looking to purchase an '05 987 Boxster S. Had a PPI done, and got the DME report. Pretty excited but having some doubts reading the report. Any help would be appreciated!
Range 1 3669 1050.7
Range 2 108 1014.1
Range 3 1 48.3
Range 4 1 48.3
Range 5 1 48.3
Range 6 1 48.3

Operating Hours 1101.00

 

Looks like it had one big zing for a fraction of a second. That is # of ignitions....so divide by 3 for rotations. 15 rotations at over redline. A non issue.


Or is that 1 ignition at hour 48.3???

 

Thanks.. yea. Looks like it read 1 Ignition at hour 48.3 on all ranges above 3, which is weird... should that not be progressive? the Range 1 and 2 seems about 50+ hours prior...

 

I don't see how 1 is physically possible.....I'd ignore it and move ahead.

 

Agreed, 1 ignition at 48.3h... probably an error blip more than anything else.

My car had real values at range 6 when I bought it, and it has been running great for the past few years without issue... I wouldn't worry about it.