Lean mixture on 1-2 shift

[John Hess]

Yeah...Your open loop mapping is set lean!

Seriously, this IS the problem.  You will probably have to remap it to 
change this characteristic.  I can only speculate as to WHY this is, 
but it is probably to limit the performance and prevent burning out 
the cat.


----------
From:  Mark Eidson[SMTP:mark.eidson at tempe.vlsi.com]
Sent:  Tuesday, March 04, 1997 9:32 AM
To:  diy_efi at coulomb.eng.ohio-state.edu
Subject:  Lean mixture on 1-2 shift

Does anyone out there have a theory that explains why on my Holley 
4di
system the mixture goes lean and boggs during the 1-2 up-shift at 
constant
throttle positions when the engine is not fully up to temperature and 
in
closed loop operation?
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