Changing 165 fuel delivery was "General tuning question - fuel ec onomy"

["Marteney, Steven J." <smarteney@xlvision.com>]

I haven't got my copy of tunercat yet, but it's coming, or the rather the
check is going.  In the meantime, to increase fuel across the board, TC has
two settings for injector flow rate, single and double fire.  Is that what I
can use for this?  I remember a couple of months ago there was a lot of
hand-waving about single-fire and double-fire and what the difference was.
Hate to bring it up, but was there a clear answer that came out of that?

Also, in the 165, is there an equivalent to the VE tables as in the speed
density stuff?  I didn't see anything in CATS function list other than "Mass
Air Flow vs. RPM, (Diag)" and the injector flow rate constants.

Steve
PS - the fuel economy question was mostly just a philosophical question, not
going to be my first target. 

-----Original Message-----
From: romans@starstream.net [mailto:romans@starstream.net]
Sent: Wednesday, June 14, 2000 11:30 PM
To: gmecm@diy-efi.org
Subject: Re: General tuning question - fuel economy


At this point I wouldn't worry about fuel economy per se.  I would try to
get the BL to stay close to 128 in as many bl cells as possible.  Then once
that is done, go leaner on the commanded afr for cruise and it will be more
accurate.
Mark
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