[Diy_efi] (no subject)

[Rick McLeod]

in my understanding, one could use static mapping as long as you know the % of alcholhol blend being used. The manufacturer method, though, is to use a sensor to measure the % inline to the injectors and dynamically map based on measurements, plus a wideband O2 sensor for feedback. This is more complex, but not beyond the scope of a DIY'r, just need newer technology controllers and sensors to pull it off. Last I herd the Ford and GM systems only added less $150 in actual parts (at thier bulk price) to improve to FFV (Ford's term for Flexible Fuel Vehicle) E85 capability. So, with some scrounging and a little work one should be able to pull off a similar for about the same increase. Some of our previous international posters have pioneered this on this list, let's see if we can drag a response from one of them, Brazil comes to mind.

----- Original Message ----
From: Frederick Trient <gpzmotoman at comcast.net>
To: diy_efi at diy-efi.org
Sent: Sunday, June 4, 2006 10:03:17 PM
Subject: [Diy_efi] (no subject)


Hello out there.
I'm brand new to the list so I hope my questions won't be too basic  
for any of you. The rising price of gas has made me think of  
improving the mpg for my '65 El Camino. At about 11 mpg with an  
Edelbrock 4 barrel carb it's getting pretty expensive to drive.  
Another reason for me to consider f.i. is the possibility of E85 gas  
becoming available. I'm going on the assumption that fuel injection  
is necessary to burn the E85 stuff. Is that correct? If so, it seems  
that it would be possible to switch, on the fly, from mapping for  
straight unleaded gas to mapping for E85 with a box somewhere on the  
dashboard. I'm thinking that it would be necessary to have different  
mapping for each type of fuel.
Would appreciate any feedback you guys could give me.
TIA,
Fred
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