Bosch KE-Jetronic convertion to EFI332...possible?

Tue Oct 21 16:41:25 GMT 1997

--IMA.Boundary.800254778
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Description: cc:Mail note part

     I'm new to the EFI332 group as well; just received my CPU parts kit, 
     etc.  My impression of the EFI332 project is that it is still very 
     much in the development stage.  I've seen a few postings here and 
     there where people have described getting their engines to run in some 
     limited mode using the EFI332 and a laptop, etc, but I do not get the 
     impression that complete FI conversion using the EFI332 is 
     commonplace.  In fact, I think there is still hardware design/test 
     work left to be done ( driver board?), and though the website archives 
     have a good amount of source code, a lot of software needs to be 
     developed as well.

     In other words, don't get your hopes up that EFI332 will be a drop-in 
     solution to your EFI woes any time soon. Unless you're an electronics 
     and programming guru, there's a good possibility you'll wear out your 
     Audi and buy another car before the EFI332 becomes practical. Really 
     what the group needs is more people (with lots of spare time) to 
     divide up the remaining tasks and continue development.  I think 
     you'll need RedHat Linux or the equivalent, and perhaps the freeware 
     assembler from the Motorola website.  You'll find thousands of pages 
     of manuals for the MC68332 at the Motorola site as well.

     As to dyno-tuning, hot wires, etc, I'm sure the EFI332 is "capable" of 
     almost anything (!?!) other FI systems are capable of, only you'll 
     have to make the required modifications yourself.  As it stands, the 
     EFI 332 comprises a CPU card with memory, a separate board(s) for 
     driving the injectors and coils, a board for I/O and accessing the 
     Motorola "Background Debug Mode," etc.  I think the A/D converters 
     live on the driver board(s), but I could be mistaken.  Some of the 
     Motorola 683xx chips have on-board A/D's, but I don't think the 
     variety used by EFI332 is one of those.  I think EFI332 has all of the 
     ingredients of a fully-featured engine management system, capable of 
     reading crank and cam positions (toothed wheels with one tooth 
     missing-- you'll have to make it yourself), MAP or MAF sensors, knock 
     sensors, O2 sensors, temperature, throttle position, etc., but 
     functionality at this point is rather limited. 

     Mike Skolones

______________________________ Reply Separator _________________________________
Subject: Bosch KE-Jetronic convertion to EFI332...possible?
Author:  diy_efi at coulomb.eng.ohio-state.edu at Internet
Date:    10/21/97 4:31 PM

Hi!

I'm interested in getting a better more efficient fuel system for 
my vehicle. It is a 1990 Audi Turbo (known as the 200 in the USA). 
It is a 5-cylinder 2.2 litre 3-speed automatic front-wheel drive 
machine. From the Haynes books I see they indicate the fuel system 
to be a Bosch KE-Jetronic system. It is still mechanical and uses 
constant feed injectors. The ignition system is fully electronic
and uses a Hitachi unit (with a mass of pins!) to mimick the workings 
of a real distributor.

I get about 12.5 litres/100km out of this thing in town driving and 
about 10.5 on the highway (at about 150km/h). I've been looking at 
rechipping the thing, but all that can be re-chipped is the ignition 
system since the fuel injection is still mechanical.

So anyway, the nicest thing to do would be to convert the entire 
fuel injection system to electronics (EFI) and then program it.
The EFI machines have better consumption and still beat the mechanicals 
for power and drivability. Also, having it in EFI form would be nice
if I decide in future to introduce nitrous-oxide, that way the mixtures 
and timing and be altered dynamically for the best use of the NO.

So, I'm on to this EFI332 system now thanks to one of the members of 
this mailing list. And, although I've just become prime bait for 
flaming, I find it necessary to send this sort of message to the list 
in order for me not to waste a lot of time only to find out the EFI332 
is the wrong choice for my system. In this regard I have some 
questions for the members of this mailing list:

        1. Anybody done a Bosch KE-Jetronic conversion to EFI332? 
        2. Anybody done a conversion to an Audi?
        3. What sort of workload is involved in KE-EFI332 conversion? 
        4. Can an idiot computer scientist like myself easily get to
           grips with this system?
        5. How easy would it be to dyno-tune this EFI332? I intend
           fitting a variable fuel rate / fuel pressure fuel pump.
        6. Can the system (the ignition system) cope with fancy things
           like Nology HotWires and Silverstone spark plugs?

If anyone has done a Bosch KE-Jetronic conversion then I'd like to 
hear about your project. :)

Just a note, this turbo has almost everything monitored that I think 
would be necessary to convert. Also has 2 knock sensors and a turbo 
boost pressure monitor (well, if it displays boost electronically while 
I drive, then I assume it has a monitor on the turbo).

The more I look at the EFI332 system the more I like it. It beats 
blowing US$500 on a rechipping of my electronic ignition unit only to 
get some 10kW more power.

Hope to hear from someone on these topics...

Thanks.

G.

--IMA.Boundary.800254778
Content-Type: text/plain; charset=US-ASCII; name="RFC822 message headers"
Content-Transfer-Encoding: 7bit
Content-Description: cc:Mail note part
Content-Disposition: inline; filename="RFC822 message headers"

Received: from coulomb.eng.ohio-state.edu (128.146.90.150) by
mailserver.mail1.com with SMTP
  (IMA Internet Exchange 2.1 Enterprise) id 000BC8CC; Tue, 21 Oct 97 08:42:14
-0700
Received: by coulomb.eng.ohio-state.edu (940816.SGI.8.6.9/940406.SGI)
	for diy_efi-outgoing id OAA18069; Tue, 21 Oct 1997 14:33:04 GMT
Received: from acenet.co.za by coulomb.eng.ohio-state.edu via SMTP
(940816.SGI.8.6.9/940406.SGI)
	for <DIY_EFI at coulomb.eng.ohio-state.edu> id KAA18052; Tue, 21 Oct 1997 10:32:54
-0400
Received: from [196.25.110.26] by acenet.co.za
  (SMTPD32-3.03) id ACE4265022C; Tue, 21 Oct 1997 16:32:04 +0200
Message-ID: <344CBCA4.55FABE45 at poboxes.com>
Date: Tue, 21 Oct 1997 16:31:00 +0200
From: Gerard <gerard at poboxes.com>
Organization: Gerard is pronounced  "je'rard"
X-Mailer: Mozilla 4.02 [en] (Win95; I)
MIME-Version: 1.0
To: DIY_EFI at coulomb.eng.ohio-state.edu
Subject: Bosch KE-Jetronic convertion to EFI332...possible?
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-diy_efi at coulomb.eng.ohio-state.edu
Precedence: bulk
Reply-To: diy_efi at coulomb.eng.ohio-state.edu

--IMA.Boundary.800254778--