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Erik,
First,
it should be understood that the EGT you see means NOTHING. EGTs can vary
10s or 100s of degrees based on sensor position. All you should be
interested in is whether #6 peaks at close to the same fuel flow as the other
cylinders. You do not care what the peak temp is....just that
it occurs at close to the same fuel flow of the other cylinders. If
your cylinders don't peak within 0.2-0.4 gph of each other, then you may benefit
from balancing your injectors for smoother and more efficient operations
at lean of peak (LOP).
GAMI somewhat (re)invented the balanced injector business and has
done a lot of innovative work in the engine arena. With that
said, my personal preference is Airflow Performance in Greenville, SC.
Instead of replacing the entire injector, AFP installs an injector body in the
injector port and then it is very simple to disconnect the fuel line and remove
the injector needle to be replaced with the new. Very quick and I like the
idea of not unscrewing and screwing anything into the engine ports multiple
times. In general, AFP is 30%-40% less expensive for the same
results. With that said, GAMI does an excellent job and its good to see
them rewarded for the ground breaking efforts they have undertaken which
benefits everyone, whether we are their direct customer or not.
I
would suggest that you go to the GAMI website and download the form for running
a lean test. That will tell you if your injectors are out of
balance---that being your fuel flow to achieve peak EGT across all the
cylinders varies more than a few tenths GPH. You can also do the same
thing on the back of an envelope or kneeboard. Just progressly lean
the engine and note at what GPH each EGT starts to drop. That will
tell you the "spread" as well. If you are out of balance, you'll be
surprised at the efficiency and smoothness that balancing can bring. Is
there a dollar payback...maybe, but the sense of satisfaction is
priceless.
Chuck Jensen
Just wondering if anyone as any
experience....Pro/Con with the GAMI injector system. I am running a
Performance IO-550 in a Legacy.
Have noticed that the #6 cylinder is
consistently running about 100 degrees hotter (leaner) EGT. If not the
GAMI injectors, is there any other way to bring the EGT's more in line, thus
allowing more effective leaning possibilities?
Also, do the GAMI
injectors tend to hold their setting or is it a constant process to keep them
in line?
Thanks,
Erik Larson
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