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project931 · Joined: 10 Dec 2002 Posts: 95 Location: scranton, pa

i was just sitting here kicking around a few ideas in my little peanut of a brain and was thinking about ditching the whole CIS and going with EFI. I was just curious if anyone has ever installed a Haltech system. If so, was it a pain in the neck or not too bad?
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Neil924 · Joined: 18 Mar 2003 Posts: 4225 Location: Canada

I think this was talked about a month or two ago. Search for it. Sorry I can't help, I'm on this site to learn and piss people off and number 2 is going very well. I have to go appologize to Min now.

Lizard · Posted: Wed Jul 23, 2003 11:13 am Post subject:

I was considering doing this to my 931 till I decided to sell it too a friend a pick up a 928 which is still in the works, but I think the only people who have done this is Simsport (and I am not 100% sure he has) and Kojab
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3 928s,

mrobbo612 · Joined: 07 Nov 2002 Posts: 8

i have installed a motec m4 to my 931 and a haltech to a freinds 931. both run better than they ever did on cis. to fit the units and associated fittings and sensors will take one to two days. to program however takes much longer. i did the motec vehicle first as the motec system has better lambda and logging as well as closed loop. once completed i rewrote the program for haltech which after installation required only minor retunning.the motec vehicle runs sequential injection while the haltech runs batch fire. if any one as interested i could put together a kit with all required fittings, sensors, injectors,fuel rails , regulators ,wiring and a programmed ecu. if required i can forward pictures if anyone is interested
cheers

924 turbo · Posted: Wed Jul 23, 2003 8:35 pm Post subject:

Price?

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Lizard · Posted: Thu Jul 24, 2003 2:23 am Post subject:

81turbo · Joined: 03 Nov 2002 Posts: 1065 Location: Oakland, CA

I am interested also. This sounds like the opportunity I have been waiting for. Where are you located mrrobb? Yes, a Price estimate would be great! For the kit would you use the haltech or the motec?

project931 · Joined: 10 Dec 2002 Posts: 95 Location: scranton, pa

mrobbo612 i think you are my new best friend.
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I'm not a complete idiot, some parts are missing.

please visit my website
www.deutschebags.com

jpab924 · Posted: Thu Jul 24, 2003 10:46 am Post subject:

Are there going to be ports for hooking up a laptop on the ecu? It would be nice to see whats going on with a laptop and a good program.

project931 · Joined: 10 Dec 2002 Posts: 95 Location: scranton, pa

the haltech has a laptop hookup
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please visit my website
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mrobbo612 · Joined: 07 Nov 2002 Posts: 8

price for kit is as follows

1 x new haltech e6h ecu with program to suit
4 x new injectors
1 x machined aluminium extrusion fuel rail and end caps
1 x rising rate fuel regulator
1 x wiring harnes [terminated]
1 x air temp sensor nw
1 x coolant temp sensor new and mounting adaptor
4 x injector seat inserts
1 x 3 bar map sensor new
supplied with all nec instructions
total price incl taxes $3000.00 aud

braided fuel lines and fittings $300.00 aud

above kit is suitable for 81 year model on to run batch fire injection with adjustable 3d ignition and fuel tables. system is also capable of running eletronic boost control via a control valve [not supplied].to run seqential injection you reguire a modified distributor to supply a sync signal to tell ecu when engine is about to fire number 1 cylinder.if you own a pre 81 model 931 you require a modified distributor to provide a hall effect signal as the factory reluctor signal is too weak for most aftermarket ecu's to cope with cost for distributor is $500.00 aud for 81 model on and $600.00 aud for pre 81 model as pre 81 must supply reference [ 1 signal per spark ] and sync signal [1 signal per 2 crank revolutions]

for motec m4 ecu with lambda [closed loop] and o2 sensor add $3000.00 aud

if you have 81odel on and wish to retain current digital ignition system and put seperate efi system over the top [batch fire only] reduce by$300.00 aud

kit is based on all new parts with the exception of distributor which is modified and rebuilt. i dont support using used injectors or sensors as the can lead to difficulties if they have intermittent failures or reduced flow rates do to blockage in the case of injectors.

im am based in sydney australia. for those based in other countries you may be able to purchase less or gst tax of 10%

jpab924 · Posted: Sun Jul 27, 2003 9:48 am Post subject:

$3,000 aud is roughly $2000,00 usd converted over. This is the price for his base kit without the other add-ons. mrrobob12, it really looks like you have done your homework on this. If I had a 931 to adapt a system like this to, it would be a good setup to run. I have plans on running something like this on an aftermarket bae setup sometime in the future. This project is still a few years away...

quick question for you mrrob, how does the batch fire system work? Is this really better than the sequential system?

mrobbo612 · Joined: 07 Nov 2002 Posts: 8

batch fire is actually inferior to sequential . batch fire all injectors fire at the same time either once per crankshaft revolution or once per 2 crankshaft revolution. sequential injection fire's injectors individually once per engine cycle at a programable time relative ,usually. to end of injection to end of induction stroke .sequential injection usually offers a slight increase in power and reduced fuel consumption and reduced emmissions.batch fire is easier to install as it requires fewer input signals .

jpab924 · Posted: Sun Jul 27, 2003 1:58 pm Post subject:

mrob, what are the performance increases (bhp) and are these figures based on stock boost? Do you have any dnyo charts I can take a peek at?

You also made mention of using a Mitsu tdo4 turbo on your 931 in a previous post. Do you have any pics of your setup?

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

Quick question, I see by your parts list you install the injectors in the head. What style injector do you use? Do you use ones with an extended pintal or standard style and live with the "dribble effect" due to the extreme long and narrow recess in the head? I plan to live with the dribble untill I get around to building an intake. Have you seen any ill effects mounting to the stock injector ports? Appreciate any feedback. I don't think it is a serious problem but I am curious.

Todd