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Author Topic: ME7 vs ME9  (Read 30271 times)
Rick
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« on: June 24, 2011, 02:18:39 PM »

I'm pretty clued up on ME7, but never worked with ME9.

Can anyone explain the fundamental differences?

Rick
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RaraK
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« Reply #1 on: June 25, 2011, 09:53:16 AM »

i have been starting to dig into it, i have yet to get a tune flashed in though.  I will gladly share what i find once i get to that point.  I hope to start flashing soon once i get a BDM read.
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thom337
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« Reply #2 on: June 25, 2011, 01:01:48 PM »

Fairly similar in concept...some nitty gritty details are different though. As far as the torque model goes, it must be expanded for different modes of operation which the 2.0T is capable of. This includes charge flap movement combined with camshaft adjustment + multiple injection modes (Lean charge, split charge, anti-knock, etc, etc). Also, injections are no longer made over a constant pressure differential (like a boost referenced FPR in ME7). This introduces some complexities with pump pressure demand and calculating your fueling overhead because it is RPM dependent due to the fixed displacement HPFP. Just start reading and reading...thats honestly a million times better than someone laying out a half-assed tuning guide without people actually understanding the concepts behind it.
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msundercober
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« Reply #3 on: June 25, 2011, 11:50:13 PM »

i have been starting to dig into it, i have yet to get a tune flashed in though.  I will gladly share what i find once i get to that point.  I hope to start flashing soon once i get a BDM read.

you need a bdm read from your own car or would any bdm read do the trick ?
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setzi62
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« Reply #4 on: June 26, 2011, 04:26:17 AM »

For anyone going beyond changing maps and starting to look into the code itself,
the main difference is that MED9 is based on the MPC5xx CPU while ME7 was on the
good old C167. That are two different worlds for those wanting to disassemble code.
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RaraK
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« Reply #5 on: June 26, 2011, 01:46:18 PM »

i have been starting to dig into it, i have yet to get a tune flashed in though.  I will gladly share what i find once i get to that point.  I hope to start flashing soon once i get a BDM read.

you need a bdm read from your own car or would any bdm read do the trick ?

Well i got a MPPS read, that is in the original file section, i want a bdm read as it gets EVERYTHING that is writable...supposedly.  Then if i mess anything up along the way, i can recover totally.
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matchew
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« Reply #6 on: June 26, 2011, 02:19:08 PM »

Only the flash (2meg) is writable over OBD on these ECU's

BDM wont yeild anything useful to you.
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msundercober
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« Reply #7 on: June 26, 2011, 03:09:57 PM »

with BDM you get e² too ... useful if you want to recover
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matchew
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« Reply #8 on: June 26, 2011, 04:16:36 PM »

with BDM you get e² too ... useful if you want to recover

I'm well aware of what you get with a BDM read....
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Rick
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« Reply #9 on: June 27, 2011, 02:21:58 AM »

I was actually thinking ME9, rather than MED9.

MED9 would come next, but I want to learn about ME9 port injection as used in for example the Ford/Volve I5 engines.

Rick
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judeisnotobscure
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« Reply #10 on: July 05, 2011, 01:38:47 PM »

I'm about to dive into med9 as well... I know i can get an mpps read but I don't want to flash until i get a bdm read for reasons stated above... I'm not sure you can get an mpps read on a b8 s4 though, at least with the clone that I have... i have both b8 a4 and s4 access, so any info regarding an obd read for a b8 s4 would be helpful.
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I have a b5 s4
but i just want to dance.
silentbob
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« Reply #11 on: July 05, 2011, 10:35:50 PM »

B8 S4 is not ME9. It's not even Bosch  Wink
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vwaudiguy
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« Reply #12 on: July 06, 2011, 08:50:13 AM »

Can you tell us anything else, Bob?
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
silentbob
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« Reply #13 on: July 06, 2011, 01:28:28 PM »

The ECU is Simos84. I think the only company that offers a tune for it is APR. I could tell a lot about it but I'm not allowed to  Wink
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nyet
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« Reply #14 on: July 06, 2011, 06:12:42 PM »

The ECU is Simos84. I think the only company that offers a tune for it is APR. I could tell a lot about it but I'm not allowed to  Wink

IOW the state of the art will be delayed for another 10 years, just like ME7.

Ridiculous. Guess what. This time i'm not spending 5 years of my life decoding it w/o tuner help like i did for ME7 Tongue
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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