Injection and Ignition Brain Research
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Hi All:
Doing a little research just for my own personal curiosity. Would you all please post here, or PM me, either way, the year and make of your car(s), plus your ignition and injection brains' Bosch and Porsche part numbers? I'm most interested in the numbers that came stock with your cars, but if you also have other number brains that you got later to replace your stock numbers (due to rebuild or otherwise), I'd like to know that information too.
I'm going to make a spreadsheet tracking the information, and anyone who wants the spreadsheet when I'm done will be welcome to have it for the cost of a PM or a post here.
Thanks all for your help!!
Leslie
1984 Euro 5 speed
Doing a little research just for my own personal curiosity. Would you all please post here, or PM me, either way, the year and make of your car(s), plus your ignition and injection brains' Bosch and Porsche part numbers? I'm most interested in the numbers that came stock with your cars, but if you also have other number brains that you got later to replace your stock numbers (due to rebuild or otherwise), I'd like to know that information too.
I'm going to make a spreadsheet tracking the information, and anyone who wants the spreadsheet when I'm done will be welcome to have it for the cost of a PM or a post here.
Thanks all for your help!!
Leslie
1984 Euro 5 speed
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Some of the info that I have collected over the years.
928 L-Jetronic controller part numbers
Label
Year Porsche P/N Bosch P/N Color
1980 928.618.106.01 0 280 002 101
1981 928.618.106.04 0 280 002 104 blue
- 1984
928 LH-Jetronic controller part numbers
25-Pin Modules Label
Year Porsche P/N Bosch P/N Color
1984 928.618.123.00 0 280 002 501 black
1984 928.618.123.00(02) 0 280 002 501 black
to 1986: Euro M28.21/22
1985 928.618.123.03 0 280 002 502 blue
- 1986: US-Spec M28.43/44
1985 928.618.123.04 0 280 002 503
- 1986: US-Spec M28.43/44/45/46
35-Pin Modules
Label
Year Porsche P/N Bosch P/N Color
1987: 928.618.123.10 0 280 002 504 blue
1988: 928.618.123.11 0 280 002 504 orange
1988: 928.618.123.12 model M 637 (GT model, manual transmission)
1989 928.618.123.13 0 280 002 507 lilac
- 1990
1989 928.618.123.14 0 280 002 506 green
- 1990: model (M637 = GT model, M639 = manual transmission)
1991: 928.618.123.25 0 280 002 508 brown
model (M 249 = Automatic transmission)
1991: 928.618.123.26 0 280 002 509 da.blue
model (M 481 = Manual transmission)
1993 - 1995: 928.618.123.30
EZF Module
Year Porsche P/N Bosch P/N Color
1984 – 1986: 928.618.124.03 0 227 400 012 Black
Euro M28.21/22
1985 - 1986: 928.618.124.05 US-Spec M28.43/44
EZK Module
1987: Early 928.618.124.10 (small “hook” clip), Later: 928.618.124.11 (LH type clip)
1988: 928.618.124.12, 14, 15
1988 - 1989: 928.618.124.13 (M637 = Club Sport)
1990: 928.618.124.16 (M637 = Club Sport)
1989 - 1990: 928.618.124.22 M 639 (GT model and manual transmission)
1989 - 1991: 928.618.124.15 model M 249 (Automatic transmission)
1991: 928.618.124.26 model M 481 (Manual transmission)
1993 - 1995: 928.618.124.30
EZK Specifics
Label
Year Porsche P/N Bosch P/N Color
1987 928.618.124.10 0 227 400 035 orange
1987 928.618.124.12 0 227 400 035 orange
1991 928.618.124.15 0 227 400 154
Bosch ECU part number Scheme
0 227 = Ignition only for ignition)
0 261 = Motronic/DME/Ladedruckregelung fuel + ignition
0 263 = " " newer generation
0 265 = ABS
0 280 = Jetronic (Monojet/L-Jet/LH-Jet/LE-Jet.. fuel + Lambda regulated
0 281 = Diesel
928 L-Jetronic controller part numbers
Label
Year Porsche P/N Bosch P/N Color
1980 928.618.106.01 0 280 002 101
1981 928.618.106.04 0 280 002 104 blue
- 1984
928 LH-Jetronic controller part numbers
25-Pin Modules Label
Year Porsche P/N Bosch P/N Color
1984 928.618.123.00 0 280 002 501 black
1984 928.618.123.00(02) 0 280 002 501 black
to 1986: Euro M28.21/22
1985 928.618.123.03 0 280 002 502 blue
- 1986: US-Spec M28.43/44
1985 928.618.123.04 0 280 002 503
- 1986: US-Spec M28.43/44/45/46
35-Pin Modules
Label
Year Porsche P/N Bosch P/N Color
1987: 928.618.123.10 0 280 002 504 blue
1988: 928.618.123.11 0 280 002 504 orange
1988: 928.618.123.12 model M 637 (GT model, manual transmission)
1989 928.618.123.13 0 280 002 507 lilac
- 1990
1989 928.618.123.14 0 280 002 506 green
- 1990: model (M637 = GT model, M639 = manual transmission)
1991: 928.618.123.25 0 280 002 508 brown
model (M 249 = Automatic transmission)
1991: 928.618.123.26 0 280 002 509 da.blue
model (M 481 = Manual transmission)
1993 - 1995: 928.618.123.30
EZF Module
Year Porsche P/N Bosch P/N Color
1984 – 1986: 928.618.124.03 0 227 400 012 Black
Euro M28.21/22
1985 - 1986: 928.618.124.05 US-Spec M28.43/44
EZK Module
1987: Early 928.618.124.10 (small “hook” clip), Later: 928.618.124.11 (LH type clip)
1988: 928.618.124.12, 14, 15
1988 - 1989: 928.618.124.13 (M637 = Club Sport)
1990: 928.618.124.16 (M637 = Club Sport)
1989 - 1990: 928.618.124.22 M 639 (GT model and manual transmission)
1989 - 1991: 928.618.124.15 model M 249 (Automatic transmission)
1991: 928.618.124.26 model M 481 (Manual transmission)
1993 - 1995: 928.618.124.30
EZK Specifics
Label
Year Porsche P/N Bosch P/N Color
1987 928.618.124.10 0 227 400 035 orange
1987 928.618.124.12 0 227 400 035 orange
1991 928.618.124.15 0 227 400 154
Bosch ECU part number Scheme
0 227 = Ignition only for ignition)
0 261 = Motronic/DME/Ladedruckregelung fuel + ignition
0 263 = " " newer generation
0 265 = ABS
0 280 = Jetronic (Monojet/L-Jet/LH-Jet/LE-Jet.. fuel + Lambda regulated
0 281 = Diesel
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Wow!! Nice offerings, guys. More than I thought I would get...
Steve J. and Garth S. Thanks! Both sites had very good info for the later models. For some reason, I'd had trouble finding the info the first time I checked John's website, but I was able to find it this time.
SharkSkin...you funny!!![hiha](https://rennlist.com/forums/graemlins/roflmao.gif)
Rich9928p, you, sir, are apparently much like me. You want to know everything about everything.
Too bad I'll never really get anywhere, but I'm interested and I'm trying to learn. Eventually, something soaks in when you live with a dyed in the wool wrencher...but it just never seems to be enough to be useful! LOL....anyway, awesome list! Thanks!
Catch you later!
Leslie
Steve J. and Garth S. Thanks! Both sites had very good info for the later models. For some reason, I'd had trouble finding the info the first time I checked John's website, but I was able to find it this time.
SharkSkin...you funny!!
![hiha](https://rennlist.com/forums/graemlins/roflmao.gif)
Rich9928p, you, sir, are apparently much like me. You want to know everything about everything.
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Catch you later!
Leslie
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Originally Posted by ImAReal(928)GirlNow
Wow!! Nice offerings, guys. More than I thought I would get...
Rich9928p, you, sir, are apparently much like me. You want to know everything about everything.
Too bad I'll never really get anywhere, but I'm interested and I'm trying to learn. Eventually, something soaks in when you live with a dyed in the wool wrencher...but it just never seems to be enough to be useful! LOL....anyway, awesome list! Thanks!
Catch you later!
Leslie
Rich9928p, you, sir, are apparently much like me. You want to know everything about everything.
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Catch you later!
Leslie
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In the hardcopy of PET page 125 list all the 'controllers' including he FI and Ign. brains. For corresponding Bosch numbers they're scattered throughout the WSMs with the Porsche part numbers.
Also, 928 Specialists, do a good job of listing which brains are associated with which MY of car.
For specific differences between different years of the same model you'll probably find that the 'eproms' were mapped a little differently but the major components of the PCB were all common.
Now that being said JDS have developed a new version of the 'tile' which is the part of the LH brain that's weak. Given that the LH brain can and does fail with no previous symptoms it's a good preventative maintenance point.
Also, 928 Specialists, do a good job of listing which brains are associated with which MY of car.
For specific differences between different years of the same model you'll probably find that the 'eproms' were mapped a little differently but the major components of the PCB were all common.
Now that being said JDS have developed a new version of the 'tile' which is the part of the LH brain that's weak. Given that the LH brain can and does fail with no previous symptoms it's a good preventative maintenance point.
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Originally Posted by the flyin' scotsman
In the hardcopy of PET page 125 list all the 'controllers' including he FI and Ign. brains.
![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
Originally Posted by the flyin' scotsman
For corresponding Bosch numbers they're scattered throughout the WSMs with the Porsche part numbers.
Originally Posted by the flyin' scotsman
Also, 928 Specialists, do a good job of listing which brains are associated with which MY of car.
As I said earlier, I'm really just doing this for my own personal curiosity. In looking for brains for Kevin, I've noticed that there seems to be some discrepancies out there as to which units will fit what cars. It got me wondering.
Thanks all!! What a great group of people this is...
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Originally Posted by ImAReal(928)GirlNow
![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
Originally Posted by ImAReal(928)GirlNow
Yeah, and what a pain it is to find them all...part of why I'm making this spreadsheet...
![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
Originally Posted by ImAReal(928)GirlNow
As I said earlier, I'm really just doing this for my own personal curiosity. In looking for brains for Kevin,
![cherrsagai](https://rennlist.com/forums/graemlins/drink.gif)
![cherrsagai](https://rennlist.com/forums/graemlins/drink.gif)
![cherrsagai](https://rennlist.com/forums/graemlins/drink.gif)
#13
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"Now that being said JDS have developed a new version of the 'tile' which is the part of the LH brain that's weak."
An updated LH control unit with a more reliable hybrid circuit is available from a few
Rennlist sponsors, e.g. 928 International.
An updated LH control unit with a more reliable hybrid circuit is available from a few
Rennlist sponsors, e.g. 928 International.
#14
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Originally Posted by ImAReal(928)GirlNow
SharkSkin...you funny!! ![hiha](https://rennlist.com/forums/graemlins/roflmao.gif)
![hiha](https://rennlist.com/forums/graemlins/roflmao.gif)
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
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Originally Posted by Lorenfb
An updated LH control unit with a more reliable hybrid circuit is available from a few Rennlist sponsors, e.g. 928 International.
![banghead](https://rennlist.com/forums/graemlins/banghead.gif)
Then we got the 84 Euro with a stick shift (now my baby), and I discovered, quite interestingly, that the stock LH unit for that car was the same number as the stock one for the automatic...the very number brain we had been looking for without success. Kevin and I had thought, based on info we must have misinterpreted out of the WSM, that the brains would have different numbers for the auto and stick cars, especially since they don't have the same motor M28 numbers.
In the stick car, the stock brain had been rebuilt by the PO through some outfit in Florida, and it came back still not working quite right. There's a definite miss in the low end, and loss of power in the high end. The PO delivered the car to us with an 85 brain in it, which is working, but as we all know it probably doesn't work as well as the original. Yikes, these cars with their electrical and brain issues. What a PITA!
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Originally Posted by the flyin' scotsman
Come on now; the WSM a pain to find info ![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
Originally Posted by the flyin' scotsman
If you like it could be scanned and emailed?
![jumper](https://rennlist.com/forums/graemlins/jumper.gif)
EDIT: If you could, please send it to Purple6666"at"aol.com. Thanks!
Last edited by Leslie 928 S2; 11-10-2006 at 03:04 PM.