Worcester/Boston Social Thread
#4654
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Join Date: Aug 2007
Location: old testament god of the squirrels
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after i found out that they run around $30k used, i've been salivating over the thought of one. the WRX is paid off next year.....then it might be time to go shopping.
#4656
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#4662
EvoM Staff Alumni
iTrader: (16)
Wow
The equipment and knowledgebase are now available to have a true flex fuel Evo with the stock ECU. Here's the laundry list.
- Flex fuel detection: merkzu has identified a flex fuel sensor (GM flex fuel sensor) and a company that is making a processor to read the flex fuel sensor and convert the ethanol content sensor signal from a frequency to a 0-5V analog signal. The processor also includes a gauge to display ethanol content
https://www.evolutionm.net/forums/sh...d.php?t=305253
- With some help from Jack of Trades, I've identified an unused ADC (analog-digital-converter) input on the ECU of all Evo 8s and Evo9s. This input will allow the ECU to read the 0-5V signal produced by the flex fuel sensor system:
https://www.evolutionm.net/forums/sh...d.php?t=314779
- tephra has begun writing a patch that will eventually allow interpolation between two sets of maps (one for pump gas and one for E85/98) using the ethanol content signal. v1 of the patch is aimed more at meth users as a failsafe, but it can be used for manual map switching as well. A later version of the patch will incorporate interpolation between pump gas and E85 maps using the 0-5V signal produced by the flex fuel sensing hardware:
https://www.evolutionm.net/forums/sh...d.php?t=314505
I'm hoping that either myself or merkzu will have a working setup in a few months...
The equipment and knowledgebase are now available to have a true flex fuel Evo with the stock ECU. Here's the laundry list.
- Flex fuel detection: merkzu has identified a flex fuel sensor (GM flex fuel sensor) and a company that is making a processor to read the flex fuel sensor and convert the ethanol content sensor signal from a frequency to a 0-5V analog signal. The processor also includes a gauge to display ethanol content
https://www.evolutionm.net/forums/sh...d.php?t=305253
- With some help from Jack of Trades, I've identified an unused ADC (analog-digital-converter) input on the ECU of all Evo 8s and Evo9s. This input will allow the ECU to read the 0-5V signal produced by the flex fuel sensor system:
https://www.evolutionm.net/forums/sh...d.php?t=314779
- tephra has begun writing a patch that will eventually allow interpolation between two sets of maps (one for pump gas and one for E85/98) using the ethanol content signal. v1 of the patch is aimed more at meth users as a failsafe, but it can be used for manual map switching as well. A later version of the patch will incorporate interpolation between pump gas and E85 maps using the 0-5V signal produced by the flex fuel sensing hardware:
https://www.evolutionm.net/forums/sh...d.php?t=314505
I'm hoping that either myself or merkzu will have a working setup in a few months...