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E85 map switching as well as SI-Drive map switching
https://mailserver.romraider.com/forum/viewtopic.php?f=37&t=20718
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Author:  J0SHCR34NY [ Sat Aug 05, 2023 12:48 am ]
Post subject:  E85 map switching as well as SI-Drive map switching

I have been playing around with MerpMod for a while now, and noticed a pattern of Tables A/B and 1/2, which I assume is for the map blending which can be setup using TGV sensor voltages (i.e. adding a flex fuel sensor), but I have also noticed Intelligent/Sport/Sport Sharp tables which each have a respective table 1/2, and I am assuming this is for being able to switch between these tables with the SI-drive, while also having map blending for E85, etc., but I am not certain on how to do this within the patch. Anyone have ideas about the tables I would need to modify to do this? I have a 2005 Forester XT ECU which is running the 2006 STI MerpMod patch, so there is the chance I would be unable to add the SI-Drive capabilities to my ECU, but if this is possible I think this would be great to have not only 91 and E85 tunes, but to be able to switch to a low-boost efficiency tune, high-boost tune, etc... Let me know if this is possible. Thanks!

Author:  riksk [ Wed Aug 09, 2023 6:36 pm ]
Post subject:  Re: E85 map switching as well as SI-Drive map switching

J0SHCR34NY wrote:
I have been playing around with MerpMod for a while now, and noticed a pattern of Tables A/B and 1/2, which I assume is for the map blending which can be setup using TGV sensor voltages (i.e. adding a flex fuel sensor), but I have also noticed Intelligent/Sport/Sport Sharp tables which each have a respective table 1/2, and I am assuming this is for being able to switch between these tables with the SI-drive, while also having map blending for E85, etc., but I am not certain on how to do this within the patch. Anyone have ideas about the tables I would need to modify to do this? I have a 2005 Forester XT ECU which is running the 2006 STI MerpMod patch, so there is the chance I would be unable to add the SI-Drive capabilities to my ECU, but if this is possible I think this would be great to have not only 91 and E85 tunes, but to be able to switch to a low-boost efficiency tune, high-boost tune, etc... Let me know if this is possible. Thanks!


MerpMod Map Switch, you usually have 3 Maps

Intellig
Sport
SportSharp

On all of those 3, you have 1 and 2.

1 = Map Blending 0.00
2 = Map Blending 1.00

So you usually tune your 1 tables to pump gas and 2 tables to Ethanol map. Your Map Blending Input (usually flex fuel sensor) will change your blend ratio and adjust between those 2 maps automatically.

Optionally, you can use a simple switch to jump from 0 to 5V in the Blend input so you can switch between tables 1 and 2 without a flex fuel sensor.

Author:  J0SHCR34NY [ Wed Aug 09, 2023 7:22 pm ]
Post subject:  Re: E85 map switching as well as SI-Drive map switching

Awesome, this is what I was assuming but I wasn't 100% sure. Thanks so much!

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