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06-05-2007, 03:17 AM
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Registered User
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Join Date: May 2006
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Programmable Motronic ML4.1 for 75/164
Hi,
I'm currently re-writting the firmware of a ML4.1 box. The goal is to have a more performant and programmable ECU. The first target will be ignition on a Mini engine, but injection will come soon after.
Does anyone know about any similar project ?
Thanks
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06-13-2007, 07:00 AM
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Registered User
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Join Date: Jun 2005
Location: Lisbon - Portugal
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This is a very interesting project!! Congratulations
In the end you can program the motronic like a Megasquirt for example?
Good luck
__________________
Joćo Martins - #RedAlfa#
Alfa Romeo 33 1.7 16v QV # Alfa Romeo 75 2.0 TS # Alfa Romeo 156 SW 1.9 JTD Mjet 16v
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06-13-2007, 08:17 AM
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Richard Jemison
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Join Date: Apr 2005
Location: Pensacola, Fl. U.S.A.
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programable FI for V6
Does anyone know about any similar project ?
Yes Al Mitchell has done several. I have one of them. It will control fuel, ign, water inj, nitrous etc. 
__________________
Richard Jemison
RJR Racing
http://scuderiagiallo.com
"you don`t have to listen, but you won`t win the argument"!
"Nothing that I might suggest will be legal in California"
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06-13-2007, 08:22 AM
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 Quote:
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Yes Al Mitchell has done several. I have one of them. It will control fuel, ign, water inj, nitrous etc.
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Sorry, but how is Al Mitchell?
Regards
__________________
Joćo Martins - #RedAlfa#
Alfa Romeo 33 1.7 16v QV # Alfa Romeo 75 2.0 TS # Alfa Romeo 156 SW 1.9 JTD Mjet 16v
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06-13-2007, 09:21 AM
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Quote:
Originally Posted by Alfar7
Does anyone know about any similar project ?
Yes Al Mitchell has done several. I have one of them. It will control fuel, ign, water inj, nitrous etc. |
Who is Al ?
Does he sell that ?
Do you have a host software for that ?
Which Motronic did he re-programmed ?
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06-13-2007, 09:22 AM
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Registered User
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Join Date: May 2006
Posts: 29
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Quote:
Originally Posted by RedAlfa
This is a very interesting project!! Congratulations
In the end you can program the motronic like a Megasquirt for example?
Good luck
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06-14-2007, 06:52 AM
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Richard Jemison
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Join Date: Apr 2005
Location: Pensacola, Fl. U.S.A.
Posts: 799
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Contacting Al Mitchell
Quote:
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Sorry, but how is Al Mitchell?
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I spoke with him wednesday. He is doing fine.
But for those interested in contacting Al, his email is below. He and his wife both race a Alfa GTV6 SCCA E Production car.
As to modifications to the unit for the 12V V6 I am clueless. Anything that flows through a solid is the work of the Devil. I know he writes code for his unit, gave me a laptop with all of the various programs, and instructions how to change the set ups. His car has become a test mule for many of my 6 cyl. cam designs & small 5.5 inch clutch & flywheel, & close ratio transaxles, after I sold the GT2 GTV6.
Email for Al is: allenom@pol.net
__________________
Richard Jemison
RJR Racing
http://scuderiagiallo.com
"you don`t have to listen, but you won`t win the argument"!
"Nothing that I might suggest will be legal in California"
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06-14-2007, 07:58 AM
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Registered User
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Join Date: Jun 2005
Location: Lisbon - Portugal
Posts: 21
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Quote:
__________________
Joćo Martins - #RedAlfa#
Alfa Romeo 33 1.7 16v QV # Alfa Romeo 75 2.0 TS # Alfa Romeo 156 SW 1.9 JTD Mjet 16v
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06-14-2007, 09:17 AM
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Registered User
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Join Date: Jun 2005
Location: Lisbon - Portugal
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I contact Allen and what he did was to completely replace the
computer in the ECU box with a Megasquirt computer.
This is a very good solution, because allows use of the stock wiring harness, what is great. 
Regards
__________________
Joćo Martins - #RedAlfa#
Alfa Romeo 33 1.7 16v QV # Alfa Romeo 75 2.0 TS # Alfa Romeo 156 SW 1.9 JTD Mjet 16v
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06-15-2007, 12:39 AM
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I prefer to keep the ECU as is, but I'm going to replace the original CPU 8052 with a modern pin-to-pin compatible which has 5 new timers and the x2 performance feature.
Also the ML4.1 circuit still has the additional ML3.1 reference pin input which can be used on the flywheel or as a cam reference sensor.
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06-17-2007, 07:17 PM
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Senior Member
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Join Date: Feb 2006
Posts: 170
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c501
Hi Alpa
That sounds like a great idea. Are you thinking about changing the 8052 to something like a c501 in the same DIP40 package?
How will you deal with the firmware? Also, do you have the maps for the eprom?
Good luck with this - night be time consuming really cool stuff.
Simon
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91 Spider, Dover MA
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06-18-2007, 02:01 AM
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Quote:
Originally Posted by Razzo rosso
Hi Alpa
That sounds like a great idea. Are you thinking about changing the 8052 to something like a c501 in the same DIP40 package?
How will you deal with the firmware? Also, do you have the maps for the eprom?
Good luck with this - night be time consuming really cool stuff.
Simon |
Firmware: as mentioned I'm writting my own one. I reuse the Bosch map access routines and their math routines. I have a Linux based Bosch map editor and an Eprom emulator which understands these maps. Their routines are well written and extensively tested (and even certified ).
I'm going to have a configurable real-time kernel (already tested) and a background main calculation loop (engine dependent). But I would not be able to share all that because most of people uses Windoz and does not have ROM emulators. It would be cool someone writes a graphical interface to program the maps and to put them into the internal EPROM through the serial connection. For the moment I don't plan to spend time on that.
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06-18-2007, 02:22 AM
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Senior Member
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Join Date: Feb 2006
Posts: 170
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Alpa
I am impressed. You have obviously thought this through really well.
Simon
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91 Spider, Dover MA
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06-24-2007, 09:37 PM
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Quote:
Originally Posted by alpa
Hi,
I'm currently re-writting the firmware of a ML4.1 box. The goal is to have a more performant and programmable ECU. The first target will be ignition on a Mini engine, but injection will come soon after.
Does anyone know about any similar project ?
Thanks
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How different are the ML3.1 and ML4.1 designs? There are schematics for the ML3.1, any for the ML4.1?
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06-25-2007, 01:16 AM
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Registered User
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Join Date: May 2006
Posts: 29
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The entire ML4.1 code is outside. Anyway I don't keep it, I just re-use some of their routines (map access, math library).
The ML4.1 schematic is in the File section of Alfa75 Yahoo newsgroup. It's derived from the Opel ML4.1 schematic).
I would say ML3.1 was a trial, ML4.1 was one of first ECUs of the 8052 architecture which is based on the 60-2 pulley (BMW, Porsche, Alfa, Peugeot GTI, Opel (GM) 2L GSI). The difference is in this 60-2 pulley and the way it's used.
The ML3.1 firmware was much simpler but most of basic routines were the same, except the ignition management.
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