DME - Not good news for me - Page 2 - Rennlist - Porsche Discussion Forums

Notices

DME - Not good news for me

Reply

Old 03-05-2018, 10:17 PM
  #16  
Nate Tempest
Addict
Rennlist Member
 
Nate Tempest's Avatar
 
Join Date: Jul 2016
Location: Victoria, BC
Posts: 314
Default

Seems crazy that the report could be that wrong, if it truly hasn't been over-revved. It's too bad the report only gives operating hours of the event rather than odometer; makes it tough to tell exactly when it happened. I'm wondering if a mechanic might have done it while it was in for servicing.
Nate Tempest is online now  
Reply With Quote
Old 03-05-2018, 10:58 PM
  #17  
estrellajon
User
 
estrellajon's Avatar
 
Join Date: Dec 2003
Location: Ashburn, VA
Posts: 756
Default

Originally Posted by Skwerl
I've seen tons and tons of cars with a bunch of 5s and 6s that still run strong and pass all relevant health checks, but strangely have never once heard of a TT breaking from old over revs. If your money shift breaks something, you tend to know it right away.

The prevalence of 997s with over revs makes me think a pretty sizeable chunk of aircooleds would have them, too.

What's funny to me is the guys who buy into the Mezger Mystique for its race-bred heritage and legendary durability but then run for the hills if they find out the car was actually driven around redline.
Lol so true. And never has one surfaced of proof that an over rev destroy an Mezger engine. Some of these guys focused too much on fake news.
estrellajon is offline  
Reply With Quote
Old 03-05-2018, 11:07 PM
  #18  
F1CrazyDriver
Addict
Rennlist Member
 
F1CrazyDriver's Avatar
 
Join Date: Nov 2006
Location: SF Bay Area
Posts: 2,023
Default

Originally Posted by Skwerl View Post

What's funny to me is the guys who buy into the Mezger Mystique for its race-bred heritage and legendary durability but then run for the hills if they find out the car was actually driven around redline.

So true. Thank you for the good laugh.
F1CrazyDriver is offline  
Reply With Quote
Old 03-05-2018, 11:27 PM
  #19  
Lucid Moment
User
 
Lucid Moment's Avatar
 
Join Date: Mar 2014
Posts: 332
Default

I'd be throughly disappointed if my DME had logged over-revs that did not actually occur, at that point I'd question all over-rev data on any Porsche. Unfortunately so much emphasis, for the nicer examples, is placed on this data that it is almost impossible to sell a car for comparable price for similar build and desirability with little to no over-revs.

To OP, did you have any over-rev data from before you owned the vehicle? Obviously the DME states that these occurred during your ownership, or the 15K miles drive since purchase, but it'd be interesting to see a comparison.
Lucid Moment is offline  
Reply With Quote
Old 03-06-2018, 04:32 AM
  #20  
atcbi5
Addict
Rennlist Member
 
atcbi5's Avatar
 
Join Date: Jun 2008
Location: Florida
Posts: 1,306
Default

“What's funny to me is the guys who buy into the Mezger Mystique for its race-bred heritage and legendary durability but then run for the hills if they find out the car was actually driven around redline.”

Hilarius! This is so true, it’s completely meaningless to me.
atcbi5 is offline  
Reply With Quote
Old 03-06-2018, 08:22 AM
  #21  
triplenet
Addict
Rennlist Member
Thread Starter
 
triplenet's Avatar
 
Join Date: Jan 2008
Location: Weston, Florida
Posts: 517
Default

Originally Posted by Lucid Moment View Post

To OP, did you have any over-rev data from before you owned the vehicle? Obviously the DME states that these occurred during your ownership, or the 15K miles drive since purchase, but it'd be interesting to see a comparison.

DME from purchase... Nothing in 4-6
Attached Images
File Type: pdf
DME Porsche .pdf (116.4 KB, 51 views)
triplenet is offline  
Reply With Quote
Old 03-06-2018, 08:58 AM
  #22  
o7silverturbo
Addict
Rennlist Member
 
o7silverturbo's Avatar
 
Join Date: Aug 2016
Location: Wayne NJ
Posts: 627
Default

Originally Posted by Tmistry View Post
I agree. Can you imagine if air cooled cars had DME info? If the engine is running strong and the leak down is good, what's the issue? These cars can take a lot more than most of us will ever put them through.

I'd like to see the DME on a purely track driven beast. Anyone seen a savage DME report? Seems like one would being bragging rights in certain circles.
range 1---21580

range 2---5762

range 3---2302

range 4---793

range 5---9

range 6---6

This is my DME report from over the summer when I was servicing the car I figured I would check it out.

I do not track the car but a group of us are into the "state highway track"

My car runs like a top, I could careless that it has range 6, hell I put them in there
o7silverturbo is offline  
Reply With Quote
Old 03-06-2018, 09:13 AM
  #23  
LexVan
Addict
Rennlist Member
 
LexVan's Avatar
 
Join Date: Jan 2013
Location: Chicagoland Area
Posts: 17,213
Default

Triplenet, have you ever had a high speed spin, on the track, with the clutch out? You can get (rare) over-revs from that situation too, since the rev-limiter does not protect the engine being spun backwards.

37,000 miles / 1,405 op hours = 26 ave mph (that's very low, you must do a ton of city stop & go driving)

1,405 - 1,288 = 117 hours since last range 6 event or about 117 x 26 = 3,042 miles ago
LexVan is offline  
Reply With Quote
Old 03-06-2018, 09:18 AM
  #24  
triplenet
Addict
Rennlist Member
Thread Starter
 
triplenet's Avatar
 
Join Date: Jan 2008
Location: Weston, Florida
Posts: 517
Default

Originally Posted by LexVan View Post
Triplenet, have you ever had a high speed spin, on the track, with the clutch out? You can get (rare) over-revs from that situation too, since the rev-limiter does not protect the engine being spun backwards.

37,000 miles / 1,405 op hours = 26 ave mph (that's very low, you must do a ton of city stop & go driving)

1,405 - 1,288 = 117 hours since last range 6 event or about 117 x 26 = 3,042 miles ago
yes,,, once on turn 1 at Sebring ... going about 85 mph in 4th ... but I think it was less than 3k miles ago...

btw I only do highway driving - or take the car to the gym on weekends...

Thanks NNN
triplenet is offline  
Reply With Quote
Old 03-06-2018, 11:12 AM
  #25  
Rambler_13
Addict
Rennlist Member
 
Join Date: Sep 2016
Location: Glastonbury, CT
Posts: 596
Default

Originally Posted by triplenet View Post
yes,,, once on turn 1 at Sebring ... going about 85 mph in 4th ... but I think it was less than 3k miles ago...

btw I only do highway driving - or take the car to the gym on weekends...

Thanks NNN
...and track days on occasion.

Triplenet, someone had mentioned a tune being a potential partial culprit, but I didn't see that you mentioned a tune. Do you have a tune?
Rambler_13 is offline  
Reply With Quote
Old 03-06-2018, 11:18 AM
  #26  
triplenet
Addict
Rennlist Member
Thread Starter
 
triplenet's Avatar
 
Join Date: Jan 2008
Location: Weston, Florida
Posts: 517
Smile

Originally Posted by Rambler_13 View Post
...and track days on occasion.

Triplenet, someone had mentioned a tune being a potential partial culprit, but I didn't see that you mentioned a tune. Do you have a tune?
track days for sure !!!! ... I was commenting on the 26 MPH average .... The car was originally owned by a Dr. and was his daily driver ... Thats probably the reason for the low average MPH ....

BTW - it had a tune - but was not happy with it so back to stock or slightly tuned ... That is absolutely why I assumed some range 4 ..:-)
triplenet is offline  
Reply With Quote
Old 03-06-2018, 03:41 PM
  #27  
F1CrazyDriver
Addict
Rennlist Member
 
F1CrazyDriver's Avatar
 
Join Date: Nov 2006
Location: SF Bay Area
Posts: 2,023
Default

The DME readout is useless to certain extent.

MY turbo had 99,999 for both range 1 and range 2. It maxed out according to tech when i had ~60k miles. I sold the car with 98k miles. Last drive with the car- i out ran a V10 Audi R8. Car did not blow up in those 38k miles after being maxed out on range 1/2. How about that for data ?
F1CrazyDriver is offline  
Reply With Quote
Old 03-06-2018, 03:47 PM
  #28  
TT Surgeon
Addict
Rennlist Member
 
TT Surgeon's Avatar
 
Join Date: Oct 2004
Location: KC ex pat marooned in NY
Posts: 12,794
Default

When flash one of these cars it messes with the preset ecu parameters for type 1-6 errors, hence mystery type 6 errors when a car doesn't even have a type 5. These reports are grossly over used, really their sole purpose is for porsche to deny warranty claims/cpo. I'm glad none of my air cooled cars ever had rev counters!
TT Surgeon is offline  
Reply With Quote
Old 03-07-2018, 03:28 AM
  #29  
atcbi5
Addict
Rennlist Member
 
atcbi5's Avatar
 
Join Date: Jun 2008
Location: Florida
Posts: 1,306
Default

Who is Mezger and what does he do?

Last edited by atcbi5; 03-07-2018 at 05:56 AM.
atcbi5 is offline  
Reply With Quote
Old 03-07-2018, 08:11 AM
  #30  
o7silverturbo
Addict
Rennlist Member
 
o7silverturbo's Avatar
 
Join Date: Aug 2016
Location: Wayne NJ
Posts: 627
Default

There also has to be a way of changing these numbers in the computer...kind of like turning back mileage
o7silverturbo is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: