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Hello, Tom thanks for all those precious information.
I have few question about the files that you share:
-Are all the files with KLR for the secondary ecu/eprom ?
-Are all the files for 951 but depends on production date?
-Can we manage to run on E85 and replace the AFM sensor for a MAF with tunerpro and a tuned ecu?
clement-931-951 wrote: Wed May 13, 2026 9:34 am
Hello, Tom thanks for all those precious information.
I have few question about the files that you share:
-Are all the files with KLR for the secondary ecu/eprom ?
-Are all the files for 951 but depends on production date?
-Can we manage to run on E85 and replace the AFM sensor for a MAF with tunerpro and a tuned ecu?
Re KLR files, if I understand your question, yes. There are two ECU boxes in the footwell of the 944 Turbo. The one on the left is called the DME and the one on the right is called the KLR. The files with KLR in their name are for that box on the right -- the KLR box.
The 951 files are not based on production date per se. They are based on whether your DME has a 24-pin chip or a 28-pin chip and whether your car is a normal turbo or a 944 Turbo S (which includes 1989 951's for this purpose).
You can edit the maps to provide the correct amount of fuel for E85. I would do that by adjusting the FQS value to supply 30% more fuel across the board, then fine-tune the actual maps as needed from there.
MAFs have a different output curve than the AFM so it is more of a challenge to edit the maps, but there are many examples of people running MAFs with tuned chips, so very possible. The XDF files include the transfer function maps to better map the chip to the output curve of your MAF, but that is an advanced technique. Running a MAF with stock/tuned chip is always a bit of a compromise, which is why Vitesse Racing and later Rogue Tuning rewrite the code for their MAF kits to better read the native MAF values. Doing that is not possible with these tools. But bottom line, yes, you can edit chips to use a MAF, but the tune may never be as good as an AFM tune.
944m3 wrote: Wed May 13, 2026 5:55 pm
Shameless plug. I have a Vitesse MAF chip I’m not using. This would only be the chips. Make me an offer if interested.
Vitesse replaced the chip with his Chip Board -- i.e., a circuit board that plugs into the chip socket. Is that what you have?
944m3 wrote: Wed May 13, 2026 5:55 pm
Shameless plug. I have a Vitesse MAF chip I’m not using. This would only be the chips. Make me an offer if interested.
Vitesse replaced the chip with his Chip Board -- i.e., a circuit board that plugs into the chip socket. Is that what you have?
Yes. I’m using the snorkel with my standalone and plan to maybe use the MAF sensor.
944m3 wrote: Wed May 13, 2026 5:55 pm
Shameless plug. I have a Vitesse MAF chip I’m not using. This would only be the chips. Make me an offer if interested.
Vitesse replaced the chip with his Chip Board -- i.e., a circuit board that plugs into the chip socket. Is that what you have?
Yes. I’m using the snorkel with my standalone and plan to maybe use the MAF sensor.
You might just pick up a generic MAF since you'll be tuning to it yourself either way? (Or use a map sensor.) The parts in the Vitesse MAF kit are worth more together than the sum of their parts I'd say...
