Help identify DME box and chip

Wil Ferch · 01-07-2003, 05:28 AM

Help...
I'm working with a friend's 85 US spec wide-body 3.2 Carrera, and the DME box should be 911.618.111.05 ( Bosch equivalent 0 261 200 050). Th is is a 24 pin chip.
Instead we find....
Box 911.618.111.16 ( Bosch equivalent 0 261 200 085, also labelled Typ 911-MWS-02...using a red label instead of black label). This is a 28 pin chip. Oddly, the later US 3.2 cars that use a 28 pin chip use a chip number 1267355358....yet this 28 pin chip that we find is 1277355330. The best I can make out is that this strange box/chip combo is part of a M637 Sport package.

Any ideas what this is..and how it differs form the normal pieces?

---Wil Ferch

ChrisBennet · ChrisBennet's Garage

Wil,
My manual (like your's) lists it as a "USA, California, Japan, Canada, Austria, Switzerland, Australia with M 637" I'm not sure what M637 is but on a hunch I looked up intake valves on the PET. Whaddaya know, the intake valves are different for M637. Since this was one of the few differences between the Club Sport and the normal motor, I bet M637 = "Club Sport".
Chris

Wil Ferch · 01-07-2003, 06:24 AM

Chris:
Thanks for your further investigations.
Chris is involved with me in the background of this question...so I still invite other Peklicanheads to add more info , if it's available.

Chris, the odd thing is that the mods that were made to this car were made around 1986 or 87 ( we believe) by the PO... we suspect through Stahl Motorspoerts in Florida . The factory Clubsport version of the 3.2, with hollow , lighter valves and a raised rev limit to 6850 or so....was introduced, I believe, in 1988. Strange. Thanks, all..
---Wil Ferch

Dutchie · 09:01 AM

some guy at http://www.netmotor.de has one. Its from september 87

it could be the Clubsport chip. The site is in german btw so if you need things translated just let me know

Wil Ferch · 01-07-2003, 05:14 PM

Well, this guy has a nice site ( I understand German), and he seems to have a Clubsport...but the core question is not addressed.
Thanks for the link, however...
--Wil Ferch

Tim Polzin · 01-08-2003, 06:54 AM

The DME number you have is from an 89.

Tim

Wil Ferch · 01-08-2003, 08:44 AM

Tim:
thanks...but not so fast....
The factory manual says 911.618.111.16 is for:

"USA,California, Japan, Canada, Austria, Switzerland, Australia with M637." In contrast, 911.618.111.15 is for "high compression engines worldwide with M637". If you read between the lines, the .16 box is for low compression engines , but with M637. Certainly low compression matches with US spec. M637, through another factory reference, is for "sport group".

Anyway, it is common for later US cars to have 28 pin chips, possibly with this .16 box, but those cars typically have the chip number ending in 358....not 330 as we're trying to figure out. The key question is the chip number.

Regards,
Wil Ferch

Tim Polzin · 01-09-2003, 06:37 AM

Sorry Will, can't help you. Perhaps Steve Wong can chime in. If nothing else, he could read your chip and tell you the differences in mapping.

Tim

Wil Ferch · 01-09-2003, 07:10 AM

Tim:
Steve is on the case already...I was hoping form some additonal historical information on this chip number. Thanks.
--Wil Ferch