Self-Tuning with the Flex Fuel XDF
- Thread starter Jeffman
- Start date
With N54 FF old Bank 1 is used as fuel main (your 91/93) and bank 2 is used as your E85 table. Timing and some other tables are added to empty space on the rom (bin... whatever you want to call it) but anyways that is why it auto populated some of the data. When you ran the bin through the converter it added some values to bin and modified others. I traced back some of the hex addresses and new address for addresses as well and its empty space on bin before modification. Means new HEX data is written with executable.
As for your question on how to interpolate the table for max power and max load at Ethanol % you are targeting, lets say E50. You have to fill full interpolation at that E85 level that you scaled. My tables might look little bit different since I modified some stuff. Also for the sensor I have 0.5-3.0-4.0 Voltage scaling. If you want it to be more linear you can do 0.50-2.25 and 4.0 which will make voltage scaling smoother (I like smooth everything on the car). This will also help with some STFT spikes in area where you roll into boost, which I noticed on some cars.
As for your question on how to interpolate the table for max power and max load at Ethanol % you are targeting, lets say E50. You have to fill full interpolation at that E85 level that you scaled. My tables might look little bit different since I modified some stuff. Also for the sensor I have 0.5-3.0-4.0 Voltage scaling. If you want it to be more linear you can do 0.50-2.25 and 4.0 which will make voltage scaling smoother (I like smooth everything on the car). This will also help with some STFT spikes in area where you roll into boost, which I noticed on some cars.
Log... WOT in grandma mode.
https://datazap.me/u/matreyia/e85-grandma-wot?log=0&data=3-22
Rock solid operation. Zero timing corrections. It was very fast even in grandma mode. At dead stop I waited for a car to zoom past me at 80mph and I stomped it and drove past him in seconds... i think it scared him because he changed lanes to get out of the way farther than necessary.
Also on the drive there was a Chanllenger Srt that TRIED some shenanigans and was so shocked that he lost will and quickly decided to slow down like a normal driver. He did not expect the asswhoopin from a convertible.
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Don't do this. The axis and data are setup specifically to match the Motiv ECA, while giving a configurable "error" condition.
I have read that post 20x and I have no idea what he is talking about. Many terms are for people that know what he is talking about and I don't know them.
I have a stage 3 lpfp with hobbs switch in the chargepipe. Are you saying there is a problem somewhere? If so, what is it and how do I fix it...pretend you are explaining to a retarded chimp when explaining. I do not know common terms, I only have a Bentley Manual with their terms so if any street terms are used I am going to be lost.
Thanks.
VT
I will send you a PM now, with chris@motiv and my email, we will help you get it sorted asap.
Don't want to derail this, but you said you have a stage 3 with hobbs switch in the chargepipe. Is that the normal place to put the hobbs switch vs the manifold? Are you running PI? I would've thought you'd want the hobbs to see true manifold boost rather than CP boost. I am about to get a stage 3 pump as well, and wanted to make sure it's in the right place.
You can get it on the Git repository for the N54 XDFs.
https://github.com/dmacpro91/BMW-XDFs/tree/master/FlexFuel/Calibration Format Tool
https://github.com/dmacpro91/BMW-XDFs/tree/master/FlexFuel/Calibration Format Tool
Awesome! One more question. Do you have to use load target per gear for FF? Sure seems like it, but wanted to confirm.
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