Carpokes Porsche Forum

Great stuff.

When I get a chance I can copy and email you some files.

Dave W. wrote: Mon Dec 02, 2024 7:39 pm There's no downside to running the car with the Cobra plugged in all the time. That's what it's made for.

Just for fun, can you open your raw hex file ( goto Tools > Advanced > Hex Editor) and look at address 1924? Can you find this sequence:
37 0C 03 04 04 04 04 10 10 05 27 23
1F 5E 11 07 1D 1E 1D 1E 1D 07 0E

I just used the search tool at Hexedit and found that string at address 03DC in the stock 24 pin bin. Does that match your bin? Hexed.it is a great tool for searching for known strings in a bin.

I found that sequence at 03DC in the Guru 24-pin BIN, and at 03DC in the factory 24-pin BIN, and at 13DC in the factory 28-pin BIN for an 89 turbo (i.e., in the same location in the upper half of the 8k chip). What is it?

Tom wrote: Tue Dec 03, 2024 9:36 am I found that sequence at 03DC in the Guru 24-pin BIN, and at 03DC in the factory 24-pin BIN, and at 13DC in the factory 28-pin BIN for an 89 turbo (i.e., in the same location in the upper half of the 8k chip). What is it?

That's the header info for the Coil Dwell table. It defines the size of the table, number of columns and rows, spacing between columns and rows, and the parameter used.
37 0C 03 04 04 04 04 10 10 05 27 23 1F 5E
37 is the memory location where RPM is stored, 0C is the number of rows (12 rows) and the next 12 numbers are the spacing between rows with the last number (5E) is the highest value.
We start with the number at the end, 5E hex, which is 94 in decimal. We always convert to decimal. The formula is
(256-xx) X 40 or (256-94) X 40 = 6480 RPM
Then we work backwards from there. The numbers before 5E are 'distance from end' or 'distance from previous'. The formula is (xx) X 40.
1F hex = 31 decimal
31X40=1240
6480 - 1240= 5240 RPM for the second row.

23 hex = 35 decimal
35 x 40 = 1400
5240 - 1400= 3840 RPM for the next row
and so on.
All tables that use RPM are defined the same way.

The next piece of header info defines the columns.
11 07 1D 1E 1D 1E 1D 07 0E
11 is the memory location where Volts is stored. There are 7 columns. and the rest... ah, well, here's the answer-
6.0, 8.0, 10.0, 12.0, 14.0, 16.0, 16.4 Volts.
The data that follows at address 03F3 are the values for the table Dwell Volts vs RPM.

If you want to Create new XDF Table, the starting point is 0x03F3. Feel free to play with that and see if you can create a new XDF that works. Use 'floating point' and 'integer' in the XDF, and the conversion is simply X to see raw decimal values. Let me know how it goes.

Awesome info, thank you! I'm going to start building out my own xdf file with all the maps I can find. I incorporated the dwell into the xdf I already had from Josh via TunerPro, making it more complete than either of the ones on TunerPro. Your data helped me find it, but I have to admit I cheated and found the table in the other (lesser) xdf on TunerPro, which helped me get it done quicker. Here's the new XDF working on a 24-pin BIN. What else am I missing?

What else do you need to run your engine/setup with the stock AFM? I think you needed Dwell time so you can run a hotter coil with the stock DME. Do you need acceleration enrichment maps? Most of the parameters from Josh/Rogue M-Tune maps are from the stock DME file, except they're in different locations. There's also a map of table locations, aka The map table map, which makes it easier to begin hacking the stock bin.
FYI here's my Dwell map. These values work for my car with an MSD coil, Iridium plugs gapped to .030". YMMV since every car is different.

Dave W. wrote: Tue Dec 03, 2024 8:28 pm What else do you need to run your engine/setup with the stock AFM? I think you needed Dwell time so you can run a hotter coil with the stock DME. Do you need acceleration enrichment maps? Most of the parameters from Josh/Rogue M-Tune maps are from the stock DME file, except they're in different locations. There's also a map of table locations, aka The map table map, which makes it easier to begin hacking the stock bin.
FYI here's my Dwell map. These values work for my car with an MSD coil, Iridium plugs gapped to .030". YMMV since every car is different.
Dwell Map.jpg

That is your stroker motor setup? Yes?

I have a weltmeister 24 pin na chip that I can get a bin file for as well as a max hp kit III chip allegedly for a lr super 48 turbo with 3bar fpr and stock injectors. also I seem to remember someone throwing up a link to a bunch of bin files they had collected on a thread here on carpokes but wasn't able to find it. For some reason I think it was maybe @four0four

gruhsy wrote: Wed Dec 04, 2024 4:05 am

Dave W. wrote: Tue Dec 03, 2024 8:28 pm What else do you need to run your engine/setup with the stock AFM? I think you needed Dwell time so you can run a hotter coil with the stock DME. Do you need acceleration enrichment maps? Most of the parameters from Josh/Rogue M-Tune maps are from the stock DME file, except they're in different locations. There's also a map of table locations, aka The map table map, which makes it easier to begin hacking the stock bin.
FYI here's my Dwell map. These values work for my car with an MSD coil, Iridium plugs gapped to .030". YMMV since every car is different.
Dwell Map.jpg

That is your stroker motor setup? Yes?

Yes, it's a 2.8 hybrid stroker with 8.5 compression ratio, 9R cam, running E85 fuel.

JamesM wrote: Wed Dec 04, 2024 4:18 am I have a weltmeister 24 pin na chip that I can get a bin file for as well as a max hp kit III chip allegedly for a lr super 48 turbo with 3bar fpr and stock injectors. also I seem to remember someone throwing up a link to a bunch of bin files they had collected on a thread here on carpokes but wasn't able to find it. For some reason I think it was maybe @four0four

yep, I had a few at https://www.shellspace.net/files/porsche/roms/

though I'm somewhat still surprised that host is up. it's on Wayback too, of course: https://web.archive.org/web/*/https://w ... sche/roms/

four0four wrote: Wed Dec 04, 2024 11:28 am

JamesM wrote: Wed Dec 04, 2024 4:18 am I have a weltmeister 24 pin na chip that I can get a bin file for as well as a max hp kit III chip allegedly for a lr super 48 turbo with 3bar fpr and stock injectors. also I seem to remember someone throwing up a link to a bunch of bin files they had collected on a thread here on carpokes but wasn't able to find it. For some reason I think it was maybe @four0four

yep, I had a few at https://www.shellspace.net/files/porsche/roms/

though I'm somewhat still surprised that host is up. it's on Wayback too, of course: https://web.archive.org/web/*/https://w ... sche/roms/

You da Man!! Thank you. I will post my collection in the download section eventually, including these. Much appreciated. The Max and Kokeln chips are out of business, right? Wouldn't want to post anything that's still a going concern...