Electromotive FI

[John Hess]

You, of course, haven't seen any '90 and later Corvettes, right.  They 
have the ECU on the drivers side under the hood.


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From:  Bruno![SMTP:b.marzano at student.canberra.edu.au]
Sent:  Sunday, April 20, 1997 1:09 AM
To:  diy_efi at coulomb.eng.ohio-state.edu
Subject:  Re: Electromotive FI

On Sun, 20 Apr 1997, David Doddek wrote:

> One thing that you have to remember about the Haltec and Electro, is 
how the
> case is made.  With the Haltec, is is a simple matter of taking a 
few screws
> out and using the chip puller to pop out the hc11 and pop in a new 
one.  It
> can be done in about 5 minutes and the parts cost about $5.  So 
Haltec is
> making $45 for 5 minutes work.
> On the other hand, the Electro has a potted case to keep the unit 
water
> tight.

[stuff about potted boards and removing chips and other stuff 
deleted]

I've yet to see a ecu placed in the engine bay of a car, which would 
seem
to me the last place to put one, due to the temperature, and the noise 
and whatever physical phenomena i might have missed. The need to open 
the
case, remove the potting, desolder the chip, put in a new one, put new 
potting in seems a major flaw in the computer's design. What happened 
to
waterproof boxes? Longer wire? with the effort required to do this to 
an
ecu, you could construct a new one, maybe two.

> I acutually wash mine in the car wash when I wash the engine.

Personally speaking, water and electronics don't mix, even though it
might be potted. I don't want to have a dig at you about your car
cleaning habits. If *you* can, that's great, but i'd rather not.


		Bruno. (b.marzano at student.canberra.edu.au)

	Early to bed, Early to rise
	Makes a man or woman miss out on the night life
						-Morphine