BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006) > Coding and Tuning
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

Coding and Tuning Discuss all avenues of coding and tuning here!


Reply
 
Thread Tools Display Modes
Old Wed, Jan-30-2013, 03:11:55 AM   #1531
terraphantm
Moderator
 
Join Date: Dec 2010
Posts: 11,663
In the garage:
Reputation: 11 terraphantm is on a distinguished road
Location: Philadelphia

United States




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by p0lar View Post
So you were running your S54 off an MSS52? That's an interesting development!
I've always suspected it was possible. The hardware seemed identical, except the MSS54 was missing a few items used to control the extra hardware (2nd MAF, extra 2 cylinders). Also if you look through the MSS52 0DA files, a few of them are for the E46 M3 (very early builds). By flashing a full MSS54 EEPROM to the MSS52, he essentially turned it into an MSS54 (that has a few extra inputs and outputs).

Nice to confirm that it can be done though. The inverse should also be possible if one were to solder on the extra equipment
__________________
Jump to top terraphantm is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Wed, Jan-30-2013, 03:22:55 AM   #1532
paffy
Registered User
 
Join Date: Jun 2010
Posts: 1,214
Reputation: 0 paffy is on a distinguished road
Location: Queens

Czech_Republic




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by terraphantm View Post
CSL and late-build non-CSLs both have MSS54HPs (and thus both have two 4mbit eeproms). The hardware itself is slightly different. The main (if not the only) difference seems to be that the CSL DMEs have the top left IC seen in your first picture, while non-CSL DMEs don't. There were a few pictures in this thread... I'll see if I can find them.

The pins that the CSL uses for its MAP sensor are used by the M5 for it's 2nd MAF sensor. So I suspect that extra IC activates those particular pins (or something to that effect).

Edit: CSL DME


That's an H-bridge. It's used to drive motors and solenoids, not measure anything. Maybe it drives the intake flap on the CSL ? Is there anything else on the CSL that moves compared to regular M3 ?
Jump to top paffy is offline   Reply With Quote
Old Wed, Jan-30-2013, 03:34:44 AM   #1533
terraphantm
Moderator
 
Join Date: Dec 2010
Posts: 11,663
In the garage:
Reputation: 11 terraphantm is on a distinguished road
Location: Philadelphia

United States




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by paffy View Post
That's an H-bridge. It's used to drive motors and solenoids, not measure anything. Maybe it drives the intake flap on the CSL ? Is there anything else on the CSL that moves compared to regular M3 ?
As far as I know the intake flap is the only extra thing that moves.

I guess the M5 uses it for extra VANOS solenoids or something.

Edit: Okay, so the CSL's throttle flap is activated via X60002/Pin 8. On the M5, the analogous pin activates something called a "Pressure Accumulation Valve"

Where I was getting confused is that the intake flap's voltage supply uses the same pin as our MAF's voltage supply (X60003/Pin 7), and the intake flap's "position sensor" sends it's signal on our MAF's signal pin (X60003/Pin 1). I did not realize that there was yet another piece for that intake flap

I do wonder if the pins for the 2nd MAF / MAP are wired up on non-CSL MSS54/HPs
__________________

Last edited by terraphantm; Wed, Jan-30-2013 at 03:49:52 AM.
Jump to top terraphantm is offline   Reply With Quote
Old Wed, Jan-30-2013, 04:28:13 AM   #1534
paffy
Registered User
 
Join Date: Jun 2010
Posts: 1,214
Reputation: 0 paffy is on a distinguished road
Location: Queens

Czech_Republic




Default Re: Comprehensive MSS54/MSS54HP DME Information

This is for anyone down the road who wants to do the BDM flashing:

EEPROM /Write is connected to CS0 on the processor
EEPROM /Output Enable is connected to CSBOOT
EEPROM /Chip Enable is probably hardwired

In order to flash, disable software watchdog and interrupts.
Set both CSBARBT and CSBAR0 to 256kb @ $00000000.
Set CSORBT to READ access only.
Set CSOR0 to WRITE access only.
Both CSBOOT and CS0 are also set to async, 16-bit, three extra waitstates, address strobe.

Follow with regular AMD flashing byte sequence.
Jump to top paffy is offline   Reply With Quote
Old Wed, Jan-30-2013, 10:53:00 AM   #1535
crnizmaj
Registered User
 
Join Date: Jan 2013
Posts: 37
Reputation: 0 crnizmaj is on a distinguished road

France




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by Biosphere View Post
I have never tried, but think its 32 or 64kb depending on if you have MSS54 or MSS54HP
ok thanks for reply.

yes it's a 2003 M3 and if i read with the M3 E46 driver : 32ko, if i read with the M3 E46 CSL driver : 64ko (this file is ok)
Jump to top crnizmaj is offline   Reply With Quote
Old Wed, Jan-30-2013, 10:58:27 AM   #1536
crnizmaj
Registered User
 
Join Date: Jan 2013
Posts: 37
Reputation: 0 crnizmaj is on a distinguished road

France




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by p0lar View Post
What are the two bytes located at offset 0x2?

1xx = MSS54HP
2xx = MSS54HP{csl}
5xx = MSS54

Also, what is the version string? It should start with 2113 and is 16 bytes wide. For example, '211323002501JD79'. Tell us what those four digits are.
very good informaton.

so is this (so it's an HP if i good understand) ? :

Jump to top crnizmaj is offline   Reply With Quote
Old Wed, Jan-30-2013, 11:22:57 AM   #1537
p0lar
Naturally Agitated
 
p0lar's Avatar
 
Join Date: Sep 2005
Posts: 3,553
In the garage:
Reputation: 0 p0lar will become famous soon enough

United States




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by crnizmaj View Post
very good informaton.

so is this (so it's an HP if i good understand) ?
Correct. It looks as if your software is grouped into words and translated to decimal, so that's a tentative 'correct'. Most hex editors would display a value such as '00 6B' at offset 0x2.
Jump to top p0lar is offline   Reply With Quote
Old Wed, Jan-30-2013, 02:09:24 PM   #1538
smooth11981
Registered User
 
Join Date: Dec 2012
Posts: 251
Reputation: 0 smooth11981 is on a distinguished road
Location: Phoenix

United States




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by p0lar View Post
What are the two bytes located at offset 0x2?

1xx = MSS54HP
2xx = MSS54HP{csl}
5xx = MSS54
This dump has a 6 there, also non-HP.

Actually, touching on the MSS52 running MSS54 SW.... every non-HP dump I've seen says MSS52 right in it. Every HP box says MSS54 instead. Of course it's byte swapped when it's read out over the OBD port.
Jump to top smooth11981 is offline   Reply With Quote
Old Wed, Jan-30-2013, 02:51:52 PM   #1539
chris325ix
Registered User
 
Join Date: Jan 2012
Posts: 859
Reputation: 0 chris325ix is on a distinguished road

United States




Default Re: Comprehensive MSS54/MSS54HP DME Information

Quote:
Originally Posted by terraphantm View Post
I do wonder if the pins for the 2nd MAF / MAP are wired up on non-CSL MSS54/HPs
I traced them and yes they are. I posted it a while back, might have to search for it because it was like 20 pages ago.

found it:
http://www.m3forum.net/m3forum/showp...&postcount=777

I don't think I quite completed my thought on that post about the op-amp. When I looked at it, it made sense though, and I believe it will work once hooked up. However right now I believe the only way to get a CSL tune done would be a full dump of a CSL DME. it wouldn't be hard to do but you'd need somebody willing to do it.

Last edited by chris325ix; Wed, Jan-30-2013 at 03:03:24 PM.
Jump to top chris325ix is offline   Reply With Quote
Old Wed, Jan-30-2013, 03:08:02 PM   #1540
cyberlando
Registered User
 
cyberlando's Avatar
 
Join Date: Aug 2011
Posts: 3,605
In the garage:
Reputation: 0 cyberlando is on a distinguished road
Location: colorado springs

United States




Default Re: Comprehensive MSS54/MSS54HP DME Information

you guys should create a new thread locked to ppl posting and only publish the findings there.....and leave this one for research purposes
__________________
Engine:
[] Euro Headers [] Euro Cats [] OEM Section 2 AR20[] B&B Exhaust [] AFE Stage 2
Interior:
[] Led Interior [] DICE Module [] Auxilary 3.5 jack [] 4 channel Amp with component speakers.....and more
Suspension/Handling:
[] KW V3 [] Eibach F&R Sways [] Vibratechnics Tranny mount [] UUC RTAB
[] Vibratechnics Motor Mount [] SSBL [] Turner Camber Plates
[] 90A Akg Subframe Bushings [] Akg Differential Bushings [] Subframe Renforcement

Jump to top cyberlando is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT. The time now is 04:22:44 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright 1999-2017 M3Forum.com
Discussing Comprehensive MSS54/MSS54HP DME Information in the Coding and Tuning Forum - Discuss all avenues of coding and tuning here! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)