DME - Not good news for me
03-05-2018, 10:17 PM
#16
Rennlist Member
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.
03-05-2018, 10:58 PM
#17
Burning Brakes
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.
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.
03-05-2018, 11:07 PM
#18
Drifting
03-05-2018, 11:27 PM
#19
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.
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.
03-06-2018, 04:32 AM
#20
“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.
Hilarius! This is so true, it’s completely meaningless to me.
03-06-2018, 08:22 AM
#21
Pro
Thread Starter
03-06-2018, 08:58 AM
#22
Burning Brakes
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.
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 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
03-06-2018, 09:13 AM
#23
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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
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
03-06-2018, 09:18 AM
#24
Pro
Thread Starter
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
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
btw I only do highway driving - or take the car to the gym on weekends...
Thanks NNN
03-06-2018, 11:12 AM
#25
Burning Brakes
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?
03-06-2018, 11:18 AM
#26
Pro
Thread Starter
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 ..:-)
03-06-2018, 03:41 PM
#27
Drifting
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 ?
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 ?
03-06-2018, 03:47 PM
#28
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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!