Ed

Can you send me the pin outs for the chips? I can do a PC board with Tango

in

an hour or so and get some made. How is it working lately?

BTW What is the status of your airplane? You have got to get it tuned up
so you can enter the  NC to Oshkosh race and win the Everett Hatch
memorial prize. Over $400. Do you think it can average over 200 MPH?

Paul Lamar

Paul,
    Hopefully the pin out numbers can be read from this schematic, let me
know if not and I will fax you a copy.  From the limited time I had the
air/fuel mixture on the running engine, it appeared to work fine.  If
anything it may be a little on the sensitive side but I did not get a chance
to really nail things down for the reason stated below.  I wanted to see how
much my mixture meter really could vary the air/fuel ratio but did not make
it that far.

    Well, if I were the superstitious type I would think the aviation gods
did not want me in the air.  While I was last out checking out the air fuel
meter, all of a sudden my laptop and the HALTECH would not talk.  And of
course, it was after I had made some changes to the timing for the fuel
injectors as I played with the response of the air fuel mixture.  In any
case, I either have a wiring problem or my HALTECH went south.  The primary
injectors are triggered continuously anytime the HALTECH is on (which
injects amazing amounts of fuel into the intake), this is without the engine
running or an EFI trigger signal.  Since the HALTECH is only suppose to
trigger on a rising or falling edge of a pulse even a wiring short should
not provide such a trigger without the engine running.

   I am going out this week end to take the HALTECH out and ship to
stateside repair facility in Dallas.  But, this may be a blessing in that I
have been wanting a good reason to buy Tracy's unit.  Was a pain trying to
program in the air anyhow.  So does not look like I will be in the air
anytime soon.  Disgruntle but not discouraged or defeated, just delayed.

  Also still waiting on my HP oil seal to come in.

Ed

I guess what I wanted to know was; are the chips a standard 18 pin .3 inch 
wide dip?

Is there something going on with that oil seal that I don't know about? :-)
Just kidding Ed. I think I know what the problem is. I think your oil level 
in the engine is higher than most because of your oil sump design.

I too think you would be better off with Tracy's EFI unit. You might want to
sell that Haltech to the road racers.
 
Paul Lamar
 
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