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Old 10-19-2011, 07:35 PM   #1
Blue_Rex
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Default Is it possible to read a .RAM file (Mem_Snapshot)

As the title says; is it possible to read a MEM_SNAPSHOT.RAM file taken with an Accessport? Like, a normal person, not just the people at COBB!

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Old 10-20-2011, 09:54 AM   #2
Cobb Tuning
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Originally Posted by Blue_Rex View Post
As the title says; is it possible to read a MEM_SNAPSHOT.RAM file taken with an Accessport? Like, a normal person, not just the people at COBB!

Hi there. The memory snapshot file can only be read by Cobb specific tools. It is designed for analysis by Cobb engineers for specific diagnostic purposes. What were you try to determine via the memory dump?

Bill
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Old 10-27-2011, 12:43 PM   #3
Paidfor
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^^^^^^^^^A little reverse engineering maybe? lol
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Old 11-01-2011, 10:42 PM   #4
RavingLunatic
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I'm bringing this back!

I assume that I would be able to read the .ram files too. I did the same thing thinking that I would be able to take a snapshot of my car's health as seen through the ECU. How can I read this?

I must add that I have had an AP for exactly 7 hours.
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Old 11-02-2011, 09:58 AM   #5
Cobb Tuning
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Originally Posted by RavingLunatic View Post
I'm bringing this back!

I assume that I would be able to read the .ram files too. I did the same thing thinking that I would be able to take a snapshot of my car's health as seen through the ECU. How can I read this?

I must add that I have had an AP for exactly 7 hours.
Logging is the means by which you monitor your car's health. Check out our AskCobb video (link below) which describes the basics of data logging with the AP v2. The ram dump will make no sense to you unless you are familiar with reverse engineering the Subaru ECU.


Bill
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Old 05-17-2014, 09:57 AM   #6
RavingLunatic
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I just asked myself the same question, so I did a search...I found this thread which I brought back from the dead asking the same question...

It's really hard being dumb
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Old 04-13-2015, 07:44 PM   #7
jkunze
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Default Reading the RAM files

I'm bringing this back from the dead as well. What I want to be able to see is the captured data that is throwing a CEL that the ECU has stored. I don't always have the AP connected and logging and not always logging the correct variables that would show me what caused a specific CEL. Advanced diagnostic tools will do this but the COBB AP does not. It just shows a CEL code and gives a brief description of said code.


I have a modified 2008 Subaru WRX that was Protuned.

Mods:
Air pump delete - removed air pump, fuses, relays, and disabled codes
Pro tuned with APv2
Forced Performance HTA68 Turbo
DW 850cc injectors
Cobb downpipe and custom 3inch cat back exhaust
Cobb SF intake and turbo inlet
Cobb XLE BPV
Perrin TMIC
Walbro 255lph pump
Grimspeed 3-way EBCS

I'm getting a P0244 which is basically a boost cut. I obviously only get it while passing somewhat aggressively (I'm not stomping on it either but rolling in to it) but still not WOT and no overboost that I can see from the boost gauges. I cannot recreate it on demand, so murphy's law says it only happens when I'm not logging. Go figure.
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Old 04-14-2015, 08:54 AM   #8
Cobb Tuning
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Quote:
Originally Posted by jkunze View Post
I'm bringing this back from the dead as well. What I want to be able to see is the captured data that is throwing a CEL that the ECU has stored. I don't always have the AP connected and logging and not always logging the correct variables that would show me what caused a specific CEL. Advanced diagnostic tools will do this but the COBB AP does not. It just shows a CEL code and gives a brief description of said code.


I have a modified 2008 Subaru WRX that was Protuned.

Mods:
Air pump delete - removed air pump, fuses, relays, and disabled codes
Pro tuned with APv2
Forced Performance HTA68 Turbo
DW 850cc injectors
Cobb downpipe and custom 3inch cat back exhaust
Cobb SF intake and turbo inlet
Cobb XLE BPV
Perrin TMIC
Walbro 255lph pump
Grimspeed 3-way EBCS

I'm getting a P0244 which is basically a boost cut. I obviously only get it while passing somewhat aggressively (I'm not stomping on it either but rolling in to it) but still not WOT and no overboost that I can see from the boost gauges. I cannot recreate it on demand, so murphy's law says it only happens when I'm not logging. Go figure.
The memory snapshot is a raw data dump made up of 10s of thousands of bytes of data that will look like gibberish unless you have spent time reverse engineering your specific factory ECU. If you would want to read freeze frame data, some OBDII scanners will do this for you (some auto parts stores that read codes for free may use a scanner that can pull this info as well). Although, it may not specifically be very useful in this case. If you are hitting boost limit fuel cut, best thing to do is to contact your protuner. The limit is also tuneable via barometric pressure so if you are moving up or down in altitude (to a notable degree), this would be an important bit of info for your protuner. If they would like to see a log, try getting in the habit of starting a log before every longer drive (say your commute).

Bill
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Old 04-15-2015, 07:54 AM   #9
jkunze
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Hi Bill:

Reviewing the freeze frame data is exactly what I'm looking for. Is this a feature that can be added to the AP? Also, I could have sworn that the AP used to be able to clear the code without resetting the ECU and all the learned data but I don't see this option anymore.
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