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Quick way of switching maps from e85 to 92 pump??

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bsbllfit7

10+ Year Contributor
1,104
3
Feb 17, 2009
Salem, Oregon
So i have v3 lite and am highly contemplating getting e85 rolling in the car. The one reason im hesitating is that i travel to the mountain and coast relatively often and e85 is not available in those places. Is there a way of saving a set of maps and then just switching that over when i go to a pump and have to get one or the other. If there is and its not too hard i am most definitely going to do this swap very soon! Thanks in advance for the answers guys (and possibly girls)
 
Switching maps is only half of the issue. The other half is how you are going to deal with filling up with the other kind of fuel when your tank is not completely empty.
 
well i would fill up on an empty tank, a little presence of e85 with pump wont harm anything it can only help it, the other way around wont be a huge issue because i wont max this thing out plus ill always have my computer on hand for on the fly corrections

also this wouldnt be a weekly switch, it would be a once in a blue moon thing only tell i can get back to a station with e85
 
Its very easy switching between E85 and pump 92 octane. The most important setting is the "Global Fuel" setting. Just make notation of what your E85 Global setting is, and your pump 92 Global setting. Just change the "Global Fuel" to the appropriate value when you change fuel. I highly recommend that you try to empty the fuel tank as much as you can without running out of fuel before you make the switch to different fuel. This will help keep your global fuel settings as close to acurate as possible during the switch.

As for Maps, Just upload as switch to a lesser or more aggresive fuel & timing maps depending on which fuel your switching to.
For example: Evo8 Ralli Art maps for E85 and Stock 2g or Stock Evo8 maps for pump 92.
Overall you want to richen A/F ratio and decrease timing when switching to a lesser octane fuel.
 
probably a pretty basic question but how do you save the maps?? I have some that i am using now for pump gas and once i switch to e85 i will get the new injectors and remember those settings for the pump and then put in the e85 and tune for that. So its easier to tune through global for e85 rather then changing my SD table i take it?
 
"Save" button.... LOL. Once you open up the program on a computer and sync up its pretty self explanatory?

Setting "Global Fuel" is dailing in the injectors for the type of fuel that you are using. Set correctly gives you the proper baseline to tune off of.
 
There was a guy saying he did a flexfuel type system with a sensor he pulled out of a flexfuel car, and then used multiple tunes with ECMlink to run it properly with different ethanol contents.

If this is true or not is very interesting to me and if I had link I'd look into it. It's defiantly worth searching their forums for though.
 
negative, im not running a air temp sensor at all. The guys at english racing see no point in running it. Just the omni 4 bar MAP sensor tied into the mdp fitting on the top of the 2g intake manifold.
 
There was a guy saying he did a flexfuel type system with a sensor he pulled out of a flexfuel car, and then used multiple tunes with ECMlink to run it properly with different ethanol contents.

If this is true or not is very interesting to me and if I had link I'd look into it. It's defiantly worth searching their forums for though.

I would think if you do this, you would still have to adjust the values/tables manually. The octane sensor would just tell you the exact octane rating in your tank when you mix compatible fuels when your not pre-measuring it.

I believe that ProEFI does it automaticlly. For that Price, it better!
 
See im looking for the more simple route, an easier way then that is wiring up the toggle switch to the idle switch and telling dsm link that i have e85 or 92. Thats what people are doing with the full version of link but im wondering if i could just swap maps easily and have a conservative enough tune to get me from point B back to point A where i would have the e85

my other option is just saying screw it and run meth/water injection instead
 
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