A post from the newbie brigade - I'm getting closer (1 of man y)
Mike Rolica
mrolica at meridian-mag.com
Thu Jul 20 12:42:41 GMT 2000
Ok it looks like all my complaining about how tough life is has
turned a few
sympathetic ears. I must thank everyone on the list who has been
helping me
out, and I have noticed that they are mostly lurkers - just soaking
in all
that knowledge.
Here is where I am at :
1- I have read and digested Prog 101 - thanks Bruce.
2- I have a scan tool and know how to use it.
3 - A fellow read off my bin from the chip and mailed me another
back -
thanks - I'll get even with you.
4 - Another fellow modified my bin and showed me how to read it in a
software
package.
5 - I was muttering about eproms at work and the guy in the office
next to
mine asked if I could do anything with this. . . . He gave me an
MCT-EPROM-4,
s/n 200682 four-socket eprom burner to play with for a while. Said
he
couldn't find any software - can anyone help point me in a direction
for this?
Ya got the same one....died in a flood....i'll email the
software if ya like....soon as I fiqure out what is wrong with my #%$#$%#$%$
windoz machine...
6 - What I have noticed is that this list has about 3 different
Camps - those
that deal in real hairy conversations with a high level of
specialized
information about platforms and ECM numbers and talk above some of
our heads
(for now), Those (like myself) who are just starting to see the
light of how
all this stuff works and are now able to apply something, and
everybody else
- some who do this for fun/profit, or both. Neato.
And then you get some real back yard wierdo's like me....
8. As soon as I have to I will get myself a hex editor (at least
once I
understand things so I can personalize my prom ID)
got a few Ive collecded, most are windows based.... Can snd ya them
too... they are freeware .
7 - Questions - Instructions or an FAQ for WinBin or Tunercat would
be nice.
Because I would like to know what some of the controllable variables
are and
how they work. . .for example . . .Main Spark bias = 10. Does this
mean
that the computer adds 10 degrees to everying in the tables or
calculated?
Or does it assume that you already have 10d static (I do!), or
something even
stranger?
8 - On transmission stuff - I have already fried one 4L60E and am
determined
not to repeat it again, and I see there are all kinds of things that
can be
modified. Which ones should I mess with and how should they be
adjusted.
MAIN LINE PRESSURE tables - It looks like big numbers at large
throttle
openings and low speeds. I guess more is better. If I can stand
the shifts,
can I make these numbers bigger, is it percent, or an abitrary
figure. LINE
PRESSURE MOD - some of these numbers are bigger and some are
negative. What
does this do? does it change the PWM, and if so, does a larger or
smaller
number equal more line pressure? same Q with DOWN SHIFT PRESSURE
MOD. I
notice that some gears have mods and some do not - why? NORMAL
KICKDOWN
SPEEDS and ENGINE SPEEDS. does this mean if the either the WOT RPM
or MPH
are exceeded it will upshift?
9. Looking at a factory bin and the one Howell burned for me, I can
tell
exactly why it ran poorly and where. There are fuel discontinuities
over
4000 rpm, and the spark table is maxed out at 36 deg for just about
every
location below 2500.
10. My next step - once I understand more about what I am doing, Is
to simply
take a factory bin and change the idle speed to 850, change the
cylinder size
to fit a 383, and change the IFR to 90lb/hr. And drive it and see
what
happens. I bet it will work pretty darn good. Can I use the
Injector Flow
rate as sort of a gross fuel adjuster, or should that sort of thing
be done
in the table. (are fuel table values in percent of something or an
arbitrary
value?)
they are vE..% or volumetric eficency...THEORetically, they should
match ve of your engine.. used dyno results to rough mine in, they made it
run but that's about it.. then it neeeded allot of tweaking.. once ya start
ya cant stop... epescially when ya see improvements..
11. Once I learn how - make one change at a time, document it, hot
rod it,
run the piss out of it and let the suggestions roll in.
12. Ok guys - your turn!
Thanks for listening to my electroyappin!
Ryan Hampl - a K-State Grad! kasaryan at aol.com
139 Hoover Ct. Controls Engineer (tubes rule!)
Salina, KS 67401 97 B12 / 86 V65 / 93chevy truck EFI
383
phone (785) 825 5831 I'M ALWAYS FIRST TO THE GROCERY
STORE!
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