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Title: Simos 18 FlexFuel (basic + advanced) Post by: jamespinger on December 19, 2020, 09:05:37 AM I've been investigating how to enable to built in flex fuel support and toying with the idea of enhancing it to get timing added based on ethanol content. I was hoping for a sanity check.
I BELIEVE: lc_fac_afu_ratio_conf = 00 (this will enable the sensor) lc_fac_afu_ratio_man_act = 00 (this will disable the manual e-level in calibration) It looks like those are the only two things that need to be changed to get the ECU to start reading from a sensor and adjusting mff accordingly.... Is there anything I'm missing? I've read through ALFU a number of times but it's very possible I'm missing something.... EDIT: c_state_srv_1_pid[N][10] is the bitfield that contains the PID for ethanol content (PID52). Also, I've an idea for ethanol level based timing, though it relies on some modifications to existing ASW patches that I didn't develop so it's not mine to share. Does anybody have any [high level] insight into adding timing for ethanol? I assume it's either custom ASW or relying on the factory knock detection/correction (since my ASW has NLC_IGSP_H_RON_COR = 0). Title: Re: Simos 18 FlexFuel (basic + advanced) Post by: Tunerdude on May 15, 2021, 12:48:11 AM Hey James,
Have you gotten any further with this? I'm also stuck on finding a solution to add timing per Ethanol percent. Title: Re: Re: Simos 18 FlexFuel (basic + advanced) Post by: jamespinger on July 08, 2021, 10:01:24 AM Hey James, Yes, I wrote my own patch.Have you gotten any further with this? I'm also stuck on finding a solution to add timing per Ethanol percent. 2 new tables in the CAL, one as an ignition modifier (rpm vs airmass) and the other to scale the ignition modifier based on ethanol content. Sent from my Pixel 4 XL using Tapatalk Title: Re: Simos 18 FlexFuel (basic + advanced) Post by: littco on July 19, 2021, 04:46:35 AM I've been investigating how to enable to built in flex fuel support and toying with the idea of enhancing it to get timing added based on ethanol content. I was hoping for a sanity check. I BELIEVE: lc_fac_afu_ratio_conf = 00 (this will enable the sensor) lc_fac_afu_ratio_man_act = 00 (this will disable the manual e-level in calibration) It looks like those are the only two things that need to be changed to get the ECU to start reading from a sensor and adjusting mff accordingly.... Is there anything I'm missing? I've read through ALFU a number of times but it's very possible I'm missing something.... EDIT: c_state_srv_1_pid[N][10] is the bitfield that contains the PID for ethanol content (PID52). Also, I've an idea for ethanol level based timing, though it relies on some modifications to existing ASW patches that I didn't develop so it's not mine to share. Does anybody have any [high level] insight into adding timing for ethanol? I assume it's either custom ASW or relying on the factory knock detection/correction (since my ASW has NLC_IGSP_H_RON_COR = 0). This is the basic that is needed yes. There are quite a few other maps which you can activate or change to get some better results with the econtent but they are more related to using the AFU without a sensor. Patching the ECU is an extra map for the timing increase with E content is very worth while but not essential if you dont mind having various maps to flash on based on E fuel Title: Re: Simos 18 FlexFuel (basic + advanced) Post by: luigicmd on September 25, 2021, 03:46:29 AM Hi, how can make patch for add new map ignition ? thanks
Title: Re: Simos 18 FlexFuel (basic + advanced) Post by: gonzarace on April 28, 2025, 06:02:15 PM This is the basic that is needed yes. There are quite a few other maps which you can activate or change to get some better results with the econtent but they are more related to using the AFU without a sensor. Hello, I would like to know where or how to learn how to make a patch in ASW, very interesting!Patching the ECU is an extra map for the timing increase with E content is very worth while but not essential if you dont mind having various maps to flash on based on E fuel Title: Re: Simos 18 FlexFuel (basic + advanced) Post by: gonzarace on April 28, 2025, 06:03:39 PM This is the basic that is needed yes. There are quite a few other maps which you can activate or change to get some better results with the econtent but they are more related to using the AFU without a sensor. Hello, I would like to know where or how to learn how to make a patch in ASW, very interesting!Patching the ECU is an extra map for the timing increase with E content is very worth while but not essential if you dont mind having various maps to flash on based on E fuel |