Unusual DME scan... And anyone in the Miami FL area?
Thread Starter
|
Registered User
Joined: Jun 2010
Posts: 155
Rep Power: 26
IIRC, it had about 300.
Don't buy a car solely on a DME, lots of other things are more important then a few over revs. They key things I asked the local dealer to looked for was synchro's and the LSD. Contact your local dealer and ask them what other things they commonly see as problems on these cars.
Don't buy a car solely on a DME, lots of other things are more important then a few over revs. They key things I asked the local dealer to looked for was synchro's and the LSD. Contact your local dealer and ask them what other things they commonly see as problems on these cars.
Registered User
Joined: Oct 2008
Posts: 807
From: East coast
Rep Power: 53
there are countless gt3s out there will zero over revs of any kind which have seen countless trips near redline. if you consider that power falls off about 700-800 rpms below redline, one can still explore the car's fun zone without threat of scoring any points.
there is nothing unusual about a DME with zero over revs and no the ECU can not be re-flashed to remove over-revs. as someone else said, i'd be more concerned about lugging, proper warm up, cool down, oil changes, etc..
FTR, a .2 gt3 has 480 ignitions per second. if the DME records say 10 type 1s, that would mean that the engine had 10 ignitions was above red for roughly 1/38th of one second, 240 would mean 1/2 of one second, etc.. as you can see there is so much more to read into a DME scan. over-revs are cumulative. the DME does not record how high, only the types which are categorized into ranges. type 1s go all the way up to 9000 iircc, type 2s to 9200. if a DME has 10-15, it is fair to say that the engine didn't exceed 100-150 +/- above red, imo. The engine would have been in that zone for less than the aforementioned 1/38th of one second or so, which would not allow enough time to go much higher.
type 1 and 2s are typically okay as they are missed- shifts, however, 3 and above are money shifts. i don't think Porsche will even consider warranty work for 4 or above. other variables apply to any type revs.
there is nothing unusual about a DME with zero over revs and no the ECU can not be re-flashed to remove over-revs. as someone else said, i'd be more concerned about lugging, proper warm up, cool down, oil changes, etc..
FTR, a .2 gt3 has 480 ignitions per second. if the DME records say 10 type 1s, that would mean that the engine had 10 ignitions was above red for roughly 1/38th of one second, 240 would mean 1/2 of one second, etc.. as you can see there is so much more to read into a DME scan. over-revs are cumulative. the DME does not record how high, only the types which are categorized into ranges. type 1s go all the way up to 9000 iircc, type 2s to 9200. if a DME has 10-15, it is fair to say that the engine didn't exceed 100-150 +/- above red, imo. The engine would have been in that zone for less than the aforementioned 1/38th of one second or so, which would not allow enough time to go much higher.
type 1 and 2s are typically okay as they are missed- shifts, however, 3 and above are money shifts. i don't think Porsche will even consider warranty work for 4 or above. other variables apply to any type revs.
Last edited by 911dev; Nov 15, 2011 at 06:56 PM. Reason: corrected type one and two ranges
Registered User
Joined: Jan 2008
Posts: 8,875
From: Vancouver
Rep Power: 684
there are countless gt3s out there will zero over revs of any kind which have seen countless trips near redline. if you consider that power falls off about 700-800 rpms below redline, one can still explore the car's fun zone without threat of scoring any points.
there is nothing unusual about a DME with zero over revs and no the ECU can not be re-flashed to remove over-revs. as someone else said, i'd be more concerned about lugging, proper warm up, cool down, oil changes, etc..
FTR, a .2 gt3 has 480 ignitions per second. if the DME records say 10 type 1s, that would mean that the engine had 10 ignitions was above red for roughly 1/38th of one second, 240 would mean 1/2 of one second, etc.. as you can see there is so much more to read into a DME scan. over-revs are cumulative. the DME does not record how high, only the types which are categorized into ranges. type 1s go all the way up to 9200 iircc, type 2s to 9400. if a DME has 10-15, it is fair to say that the engine didn't exceed 100-150 +/- above red, imo. The engine would have been in that zone for less than the aforementioned 1/38th of one second or so, which would not allow enough time to go much higher.
type 1 and 2s are typically okay as they are missed- shifts, however, 3 and above are money shifts. i don't think Porsche will even consider warranty work for 4 or above. other variables apply to any type revs.
there is nothing unusual about a DME with zero over revs and no the ECU can not be re-flashed to remove over-revs. as someone else said, i'd be more concerned about lugging, proper warm up, cool down, oil changes, etc..
FTR, a .2 gt3 has 480 ignitions per second. if the DME records say 10 type 1s, that would mean that the engine had 10 ignitions was above red for roughly 1/38th of one second, 240 would mean 1/2 of one second, etc.. as you can see there is so much more to read into a DME scan. over-revs are cumulative. the DME does not record how high, only the types which are categorized into ranges. type 1s go all the way up to 9200 iircc, type 2s to 9400. if a DME has 10-15, it is fair to say that the engine didn't exceed 100-150 +/- above red, imo. The engine would have been in that zone for less than the aforementioned 1/38th of one second or so, which would not allow enough time to go much higher.
type 1 and 2s are typically okay as they are missed- shifts, however, 3 and above are money shifts. i don't think Porsche will even consider warranty work for 4 or above. other variables apply to any type revs.
I used those extra 500 RPM a lot
Registered User
Joined: Oct 2008
Posts: 807
From: East coast
Rep Power: 53
that rocks!!! and, speaks well for the engineering. not knocking the 997 engine, but if that was that strong, imagine how strong our Mezger dry sump racing engines are.
Registered User
Joined: Jan 2008
Posts: 8,875
From: Vancouver
Rep Power: 684
yes, that is why I bought a GT3, looking forward to giving her a run as well!
Registered User
Joined: Oct 2007
Posts: 2,012
From: San Diego
Rep Power: 123
Just a previous owner that babied his car.
Personally I feel that a redline a day keeps the mechanic away!
The cars were designed to perform at their best when being flogged. Evidence of this is in the inherent design of the engine such as the various lubrication systems. The RMS ,for example, receives the best lubrication when the engine is at its maximum RPM (max vacuum). The nice thing is that modern cars are starting to be more like aircraft. They only start to have issues when they are not used.
Jason
Personally I feel that a redline a day keeps the mechanic away!
The cars were designed to perform at their best when being flogged. Evidence of this is in the inherent design of the engine such as the various lubrication systems. The RMS ,for example, receives the best lubrication when the engine is at its maximum RPM (max vacuum). The nice thing is that modern cars are starting to be more like aircraft. They only start to have issues when they are not used.
Jason
Thread
Thread Starter
Forum
Replies
Last Post
