DIY_EFI Digest V5 #188

Mon May 22 10:15:53 GMT 2000

Hi

Hope someone can help
I have a Ford Ka 1.3 sefi eecv. The problem is after revving
the engine and letting off the throttle the engine dies.
The engine will start ok, idle ok and run ok until you 
press clutch after moderately high revving.
Any ideas??  Thanks in advance.

Steve Collister 
Area 4 Maint 
0151 485 6309 

-----Original Message-----
From: DIY_EFI-Digest-Owner at diy-efi.org
[mailto:DIY_EFI-Digest-Owner at diy-efi.org]
Sent: 18 May 2000 13:00
To: DIY_EFI-Digest at lists.diy-efi.org
Subject: DIY_EFI Digest V5 #188

DIY_EFI Digest         Thursday, May 18 2000         Volume 05 : Number 188

In this issue:

	Subject: Free Data Acquisition Starter Kit
	Ignition Timings
	Re: Free Data Acquisition Starter Kit
	Delco controllers
	RE: Bosch LE/2 Jetronic (info and problems)
	Re: Delco controllers
	Re: Delco controllers
	RE: Free Data Acquisition Starter Kit
	easy anti-lag system
	Re: easy anti-lag system
	AW: easy anti-lag system

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Date: Wed, 17 May 2000 05:44:32 -0700 (PDT)
From: Carter Shore <clshore at yahoo.com>
Subject: Subject: Free Data Acquisition Starter Kit

I got one of these units, and was rather impressed. I
used it with my laptop to monitor and capture the O2
signals while troubleshooting my ECU. The bandwidth is
rather low though, so capturing things like injector
pulse width is dicey. But TPS, MAF, temps, etc. are
OK.
I'd like to attach position sensors to the suspension
on each corner, and then capture dynamic vehicle
performance for chassis tuning.

Carter Shore

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Date: Wed, 17 May 2000 10:33:47 +0100
From: Corner Paul <Paul.Corner at icl.com>
Subject: Ignition Timings

Hi All

I've been messing about with the ignition side of my ECU, writing new code
and grafting it to the fuelling software....
Working out the initial advance tables from the original advance curves. I
noticed that when the data is converted from degrees/RPM to mSec before TDC,
it remains fairly constant from tickover to 4500 RPM.
Question is - can I use this time constant up to, say 6500 RPM, rather than
messing around with look up tables etc. Perhaps, at a later stage, when the
engine is running and the hardware has been tested, the software can be
rewritten to use look up tables. It really depends on how much advance is
required above 4500 RPM.

Regards, Paul.

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Date: Wed, 17 May 2000 16:48:40 +0200
From: Jan =?iso-8859-1?Q?W=E4nnman?= <janne at navigate.se>
Subject: Re: Free Data Acquisition Starter Kit

You can use an 5B module to conver almost anything to 0-5 V 
Prizing is about 2000 sek , convert that to whatever you like..
:-) /Janne

>Hi all,
>      Does anyone know of a cheap and easy diy way to take a frequency
>output and convert it to 0-5....I guess what I am getting at is there
>something on the market CHEAP......say 1500hz-12500hz(12v pulled to
>ground)and convert it to 0-5v so I can use it on this elcheapo data acq
>kit...thanks
>-Carl Summers
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Date: Thu, 18 May 2000 03:22:29
From: Mike from West Australia <erazmus at wantree.com.au>
Subject: Delco controllers

Hi chaps,

Had some feedback from a local mechanic who swears by Delco
controllers as the be all and end all of ECU's and setups, he
says they are better then Motec and Haltech...

Just curious if anyone has any Delco web info to check this out ?

Rgds

Mike Massen

Pictures of site installation at Mendulong near Sipitang, Sabah (Malaysia)
Remote Area Power System   http://www.wantree.com.au/~erazmus

Vehicle modifications on GMH Turbo, twin tyres, possible 175Kw at wheels
Preliminary pictures at
http://www.wantree.com.au/~erazmus/Twin_tyre_vehicle/

Editorial on twin-tyre opinion and good reference about tyres:-
http://www.geocities.com/MotorCity/2195/ttyreopinion.html

Ancient Sufi saying:
        "Should your God save you from adversity, choose another God"
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Date: Wed, 17 May 2000 22:33:09 +1200
From: Steve Spiers <s.spiers at xtra.co.nz>
Subject: RE: Bosch LE/2 Jetronic (info and problems)

>
>
>
> Date: Tue, 16 May 2000 10:04:51 +0100
> From: "Rich M" <rsrich at cwcom.net>
> Subject: RE: Bosch LE/2 Jetronic (info and problems)
>
> Steve,
> If it's any help, I came across some resistance values versus temperature
> for the Croma coolant sensor:
>  Croma 2000 ie Turbo 1986-90
> Temp                Resistance
> 20°C                2-4k
> 50°C                600-900 ohms
> 80°C                200-400 ohms
> 90°C                100-300 ohms
>

Yeah, I have a book with all the values

it was about 250 ohms at "normal" temp. this means its running about the
right temp,
maybe the gague on the dash is wrong. In my experence Its ver unlikley that
the gague on
the dash is wrong, but you never know

>
> These do show a bit of spread, but you may be able to make some
measurements
> at running temperature to see if there's something obviously amiss. If you
> measure significantly higher than 300-400 ohms at running temperature, I
> think this could be a chunk of your problem.

I found one other interesting thing, 1 of the 3 values in the AFM was out,
do you recon
that this means the AFM is broken?

I tried adjusting it on the Gas analiser, could not get the CO below 8%, It
should be
about 1% or less. Adjustment screw on the AFM had little effect

Steve

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Date: Wed, 17 May 2000 15:43:18 -0400
From: "Matthew" <mivan at ozonia.com>
Subject: Re: Delco controllers

Well if anyone gets/has any info I would certainetly by interested. They may
be better, but at what cost? Motec is as good as it gets from my limited
knowledge.

Matt
- ----- Original Message -----
From: "Mike from West Australia" <erazmus at wantree.com.au>
To: <gmecm at diy-efi.org>; <diy_efi at diy-efi.org>
Sent: Thursday, May 18, 2000 3:22 AM
Subject: Delco controllers

> Hi chaps,
>
> Had some feedback from a local mechanic who swears by Delco
> controllers as the be all and end all of ECU's and setups, he
> says they are better then Motec and Haltech...
>
> Just curious if anyone has any Delco web info to check this out ?
>
>
>
> Rgds
>
>
> Mike Massen
>
> Pictures of site installation at Mendulong near Sipitang, Sabah (Malaysia)
> Remote Area Power System   http://www.wantree.com.au/~erazmus
>
> Vehicle modifications on GMH Turbo, twin tyres, possible 175Kw at wheels
> Preliminary pictures at
http://www.wantree.com.au/~erazmus/Twin_tyre_vehicle/
>
> Editorial on twin-tyre opinion and good reference about tyres:-
> http://www.geocities.com/MotorCity/2195/ttyreopinion.html
>
> Ancient Sufi saying:
>         "Should your God save you from adversity, choose another God"
> --------------------------------------------------------------------------
- --
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

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------------------------------

Date: Thu, 18 May 2000 08:13:12 +1000
From: Peter Gargano <peter at ntserver.techedge.com.au>
Subject: Re: Delco controllers

Matthew wrote:
> 
> Motec is as good as it gets from my limited knowledge.

You're probably right.
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Date: Wed, 17 May 2000 17:15:36 -0700
From: Carl Summers <InTech at writeme.com>
Subject: RE: Free Data Acquisition Starter Kit

Thanks to all who have responded...looks like National has something I can
use....ttyl
- -Carl Summers

- -----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Greg Hermann
Sent: Tuesday, May 16, 2000 8:57 PM
To: diy_efi at diy-efi.org
Subject: RE: Free Data Acquisition Starter Kit

>Hi all,
>      Does anyone know of a cheap and easy diy way to take a frequency
>output and convert it to 0-5....I guess what I am getting at is there
>something on the market CHEAP......say 1500hz-12500hz(12v pulled to
>ground)and convert it to 0-5v so I can use it on this elcheapo data acq
>kit...thanks
>-Carl Summers

Have you tried Omega, Carl??

Greg

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Date: Wed, 17 May 2000 20:27:53 -0700 (PDT)
From: dennis <spoolboy at autospeed.com>
Subject: easy anti-lag system

Hello world! ;)

I'm asking for help, suggestions, and etc. on how to design an anti-lag
system for my car. 

I don't really want to stick anything in the exhaust manifold, like an
additional injector, and air supply, or a spark plug. I want this to be a
logic type thing only. 

I have done a few minor experiments and found that with ignition timing set
35degATDC, I make 1psi of boost at idle. At 2000rpm, I make about 11psi,
where my wastegate is set to open.

I want this to work on deceleration also, similar to the systems on rally
cars.

My main problem so far, is how to delay the ignition signal that fires the
coil, 47degs of crank rotation.
(stock timing is 12deg btcd)

This car is a FWD dodge turbo that uses a hall effect sensor to trigger the
ignition. The computer then grounds the ignition coil to fire it. The
computer advances and retards timing some depending on other sensor
variables. 

I am going to use a simple comparator or two on the TPS sensor to enable
this function, with a cabin mounted switch to "arm" it.

I would just buy an MSD or something to retard the timing, but they only
retard a total of 20deg for their best module, and as I said, I need 47deg
of retard.

I will also probably send the MAP sensor signal wire on this car a voltage
that corresponds to more fuel need, so that it will increase injector open
time so I get a richer mix to help "bang" up the turbine.

Any thoughts are appreciated. 

TIA

Dennis

PS-how do I get off of digest mode, and get individual e-mails?

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Date: Thu, 18 May 2000 00:58:59 -0400
From: Frederic Breitwieser <frederic at xephic.dynip.com>
Subject: Re: easy anti-lag system

Pinch the hose that goes to the wastegate.
Retard timing.
Increase fuel pressure.

- -- 

Frederic Breitwieser
Xephic Technology
769 Sylvan Ave #9
Bridgeport CT 06606

Tele: (203) 372-2707
 Fax: (603) 372-1147
Web: http://xephic.dynip.com/
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Date: Thu, 18 May 2000 10:38:29 +0200
From: "Rausch, Bernd" <BRausch at rnt.de>
Subject: AW: easy anti-lag system

Hello Dennis,

no idea how to retard the timing that much, but it might be a good idea to
watch the EGT. Might be very hard on exhaust valves and turbine wheel. I
would not like EGT above 850-900deg C. Add fuel to reduce the EGT.

greetings,
Bernd Rausch

- -----Ursprüngliche Nachricht-----
Von: dennis [mailto:spoolboy at autospeed.com]
Gesendet: Donnerstag, 18. Mai 2000 05:28
An: diyefi
Betreff: easy anti-lag system

Hello world! ;)