[Gmecm] E85 conversion

[terry]

on the e85 vehicles that i am familiar with gm and
dodge the entire fuel supply is plastic or composite
they have a flex fuel sensor that measures the amount
of ethanol and the temp to determine the amount
ignition timing, fuel mixture etc the fuel injectors
are very different in which the orings are not sold
seperately and made from a material to deal with
ethanol along with the injector itself (denso)
as far as tuning if you can get the fuel system to
live with the ethanol fuel lines, injectors, etc and
possibly install a heated o2 sensor you will be able
to work what bugs out that you have also it will need
more flow to get the the a/f ratio right.
terry

--- "SubZero350 at att.net" <subzero350 at att.net> wrote:

> I know this topic has been talked about in the past
> but one of our local gas 
> stations has just recently been approved by the
> state to sell E-85.  Now 
> that this is coming to my town, I would like to know
> a few more specifics 
> about what exactly it takes to run E-85.  I found
> the following website but 
> it did not answer all my questions...
> 
> http://www.e85fuel.com/index.php
> 
> Hopefully someone on this list will know more about
> E-85 as I have specific 
> questions.
> 
> 1) Exactly what components in the typical GM fuel
> system are NOT compatible 
> with E-85?  (Obviously I know rubber O-rings and
> fuel lines are not, but 
> what about steel and plastic?)
> 
> 2) Since I have the ability to tune nearly all the
> ECMs/PCMs in the cars I 
> own, resetting A/F ratios or widening the INT/BLM
> operating windows won't be 
> a problem.  Do I need to alter the R/L O2 voltage
> tipping point?  If so, to 
> what?
> 
> Thanks for the info in advance.
> 
> -ryan 
> 
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