[Gmecm] Dare we revisit fuel economy ?

[Mark Romans]

I've never checked to see if it really works!
The load is so light, it doesn't hurt anything.
It enables in the code for 60 sesconds then 
comes back to regular closed loop for a quick check, then
back to the commanded leaner afr  (Or what it guesses it to be).
I posted that section of the code last time.
Mark
----- Original Message ----- 
From: "Cowen" <captain_krill at yahoo.com>
To: <gmecm at diy-efi.org>
Sent: Tuesday, September 27, 2005 12:23 PM
Subject: [Gmecm] Dare we revisit fuel economy ?


> Last time this topic came up, some pretty heated posts
> surfaced!  Unfortunately for a newby, first-rodeo type
> like me, some of the basics were lost in the details. 
> As a newbie who expects (and hopes!!!) to be
> corrected, I'm hoping for some answers to a few
> questions re: Highway Mode. From those who've tried
> it, 
> 
> 1. Does it actually make any difference in economy? 
> If so, what sort of percentage was found?
> 
> 2.  How dangerous is it, in terms of engine damage? 
> Can you really go so lean you have misfires (even
> though that's counterproductive) without melting
> things?
> 
> 3.  Do people enable Hwy mode forever, or are you guys
> finding it causes problems of some kind?
> 
> 4.  Is Hwy mode usually a "stand alone" part of the
> PROM, with distinct fuel and spark maps, or does
> messing with it change other things as well?
> 
> Thanks for helping me out with the truth regarding
> something that seems almost too good to be true when
> you first hear about it!
> 
> 
> 
> **********************END TRANSMISSION**********************
> 
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