Carpokes Porsche Forum

Trouble wrote: Mon Jun 16, 2025 4:46 pm Hey Tom, How much is it for you to produce one of those 3D printed ribbon pieces for me??? I also have the Lindsey Racing Modification on my ECU, But installing one of those pieces and Powder coating my cover will take it over the top!!!!

Tom wrote: Sat May 24, 2025 6:05 pm I plan to do a more complete guide at some point, but in the meantime wanted to share something I finally figured out about TunerPro and Josh's xdf files. @whalenlg and I have discussed this in the past, and I was always a bit perplexed why he got different TunerPro behavior than I did.

Josh did a great job setting up the xdf file so that is makes sense to human eyeballs. In the WOT map, for example, the entries are shown as AFR number -- 14.7, etc. -- so when you edit the maps you can put in numbers that make sense to you, rather than trying to calculate the actual value that gets burned in the map. The problem I was having is that I couldn't get values lower than 12 to stick. I'd save 11 or even 10, and it would come back as 12 or so. Inspecting the XDF file, I saw that Josh entered 12 as the minimum value. The weird thing was @whalenlg was using the same xdf with the same minimum, but was able to save lower numbers. Fast forward to this afternoon, and I finally found the toggle where you can turn the limits on and off (or change the limits). Here are screen shots showing how/where to turn off or change the limits in case helpful to any frustrated would-be tuner down the road.


Start by opening the map that has the limit you want to change or turn off. Then go here....
exdmenuplace.jpg


And it pulls up this box where you can make the change.
xdf-limit.jpg

whalenlg wrote: Sat Aug 16, 2025 11:47 pm

Tom wrote: Sat May 24, 2025 6:05 pm I plan to do a more complete guide at some point, but in the meantime wanted to share something I finally figured out about TunerPro and Josh's xdf files. @whalenlg and I have discussed this in the past, and I was always a bit perplexed why he got different TunerPro behavior than I did.

Josh did a great job setting up the xdf file so that is makes sense to human eyeballs. In the WOT map, for example, the entries are shown as AFR number -- 14.7, etc. -- so when you edit the maps you can put in numbers that make sense to you, rather than trying to calculate the actual value that gets burned in the map. The problem I was having is that I couldn't get values lower than 12 to stick. I'd save 11 or even 10, and it would come back as 12 or so. Inspecting the XDF file, I saw that Josh entered 12 as the minimum value. The weird thing was @whalenlg was using the same xdf with the same minimum, but was able to save lower numbers. Fast forward to this afternoon, and I finally found the toggle where you can turn the limits on and off (or change the limits). Here are screen shots showing how/where to turn off or change the limits in case helpful to any frustrated would-be tuner down the road.


Start by opening the map that has the limit you want to change or turn off. Then go here....
exdmenuplace.jpg


And it pulls up this box where you can make the change.
xdf-limit.jpg

I saw a news story today describing a guy with a BMW335 was able to use ChatGPT to generate a custom tune and it resulted in 1 sec faster 0-60 times.
https://www.autoblog.com/news/tiktoker- ... r-than-new

So - I gave it a whirl putting in what I think are the correct values for my stock 951 and asking to adapt to the new Evergreen RaptorX turbo + the 89 DME bin I am running.

Here's what ChatGPT came out with (complete with updated Partial Throttle Fuel Map, etc.):

I built a conservative Evergreen Raptor part-throttle fuel map tailored to your setup (AFM, EV1 40@3→[email protected] bar, ML3.1, CA 91). You’ve got:

AFR targets (12×12) for smooth cruise → pre-boost enrichment

RAW ECU values (already converted with X = round(128*14.7/AFR))

Delta vs your current map (AFR difference) so you can see changes

Download any/all:

AFR targets: CSV • Excel

RAW ECU values: CSV • Excel

Delta vs current (AFR): CSV • Excel

How to use:

Paste the RAW grid into your “Part-Throttle Fueling Map” in TunerPro (12×12).

Keep your WOT/boost maps as we set earlier (target 11.5–11.8 AFR).

Flash, warm up, and verify trims at idle/steady cruise (±5–8%).

Do light-to-medium throttle pulls and log AFR: you should see ~14.7 at cruise, easing toward 13.5→13.2 as you approach boost (3.2–4.6k), which is safer on CA 91 with the Raptor’s midrange.

If you want me to nudge this table “leaner” for mileage (slightly higher AFR in the 16–24% load columns) or “richer” for extra knock margin in hot weather, say the word and I’ll regenerate new files.

Will dig in deeper over the next few days

@Tom - might be interesting to compare what ChatGPT says for your setup and how the resulting maps look compared to yours.

whalenlg wrote: Sun Aug 17, 2025 12:51 pm Anyone have a .xdf file for the KLR? My deeper discussion with ChatGPT is asking for one & I can't get Google to find it for me...