----- Original Message -----
Sent: Thursday, August 28, 2003 9:19
PM
Subject: [FlyRotary] Re: MSD injector
test results
Be happy to, I won't
be able to do it until Saturday, but will be out at the airport then.
However, I would suggest that we use the default MAP setting that Tracy ships
the unit with. I keep my "B" controller set at his default. The reason
is - I can have my manual mixture control index postioned at where ever I
want - by adjusting the program value. If optimum finds my manual
knob set at 10:00 then I lean the program setting until I get optium
at 12:00. If at 2:00 then I enrichen the program MAP until I can set the
manual knob to 12:00
I normally program the controller such that my
arrow on my manuel mixture control points at 12:00.
I am using the stock 460 cc/min low impedance
Mazda Injectors
Hi
Ed,
Thanks for
the test offer. I have to admit that you lost me with your reasoning for
leaving the B controller at the default. I can't leave the B controller
at the default, because it's too rich to run below about 15" MAP.
I also adjust the program value to leave the manual mixture knob at
12:00. At this setting, when I turn off the primaries (MSD's) around
idle, I have to turn the mixture knob all the way down, and it's still a
little too rich running on the Mazda 550's.
Since you
have matching injectors, you would expect to be able to turn off the
primaries, and have the secondaries run at the same mixture setting. In
the past, you've mentioned that you have to enrichen the mixture before
turning off the primaries, or the engine wants to lean out and die. The
question is- do you have to leave the mixture richer than 12:00, or can you
turn it back to 12:00 and still run fine on the secondaries
alone?
Tracy, is
this a valid test? In other words, do the primaries and secondaries get
the exact same pulse width when running by themselves below the staging
point?
Thanks,
Rusty
Yes, that is an accurate
statement.
Tracy