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Old 06-22-2011, 01:48 PM   #1
Volvo in Electronics
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Default Different tuning approach for LH2.4

Hi there,

I did some engineering on our LH-Jetronic in the last few years. Not reading in forums (at least not the right ones), I was told now, that many secrets are already disclosed. I have seen the sticky post on this board, too. Unfortunately I worked independantely from you guys. But perhaps, there's something new to you anyway.

Check out these two videos:

http://www.youtube.com/watch?v=N47dMUC0Wzc (general)
http://www.youtube.com/watch?v=7vmRMGd9u60 (example)


As I said before, I used a different approach than the serial communication that's already provided. The protocol I use is an up-to-date common standard in the automobile development - at least here in europe. So you can use the same tools for calibrating the Jetronic, that engineers from, let's say, Mereceds used for calibrating the Bosch ME9.7 in their E-Class. Developing this adapter was more of an academic nature. I just found it being interesting to make a link between a child of the late 80s to the present.
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Old 06-22-2011, 02:05 PM   #2
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Wow, that looks nice, very impressed.

One question, how is it possible to change stuff in the eprom?
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Old 06-22-2011, 02:06 PM   #3
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Cool. Do you have more info on what you did?
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Old 06-22-2011, 02:42 PM   #4
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Very impressive!

Get in here Brett!
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Old 06-22-2011, 04:21 PM   #5
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Do you work for Bosch?
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Old 06-22-2011, 05:02 PM   #6
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I want this.
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Old 06-22-2011, 05:11 PM   #7
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Sent you an email via Youtube.
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Old 06-22-2011, 06:09 PM   #8
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Okay, some more info: I was working for a couple of years on reverse engineering the LH. I first figured out schematics + layout, then unknown IC's (like the Hybrid-IC) and finally the whole software (at least nearly, I never discovered adaptive idle calculation).

Then I started working on this adapter. I work in the automotive industrie (not Bosch ) where I calibrate drive train ECU. I thought it would be funny to use the same tools for calibrating our good old Jetronic. The adapter consists basically of a main computer plus an I/O converter and safety computer. Like an Ostrich or any other Emulator it replaces the original EPROM (so I'm not changing the original EPROM, if that was your question JW?).

Like I mentioned before, this project is just for fun. Go to the development division of volvo, give this adapter to them and they will be able to calibrate an old fashioned Jetronic like any of their actual prototypes. Thats the whole point! The electronic is quite expensive and the tool license is high priced, too. Nothing like tuner pro - but I didn't know that before
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Old 06-22-2011, 06:32 PM   #9
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Old 06-22-2011, 06:40 PM   #10
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Quote:
Originally Posted by Volvo in Electronics View Post
Like an Ostrich or any other Emulator it replaces the original EPROM (so I'm not changing the original EPROM, if that was your question JW?).
yup, that is clear now, thanks.

Very impressive work!
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Old 06-22-2011, 11:37 PM   #11
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hello there....

I'd like to get my hands on this...

I can only touch the Eeprom with my burner and Beepee's XDF definition files. I have no way to tune real time.

Very impressive, and absolutely a must have tool. I cannot afford an ostrich..
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Old 06-23-2011, 12:22 AM   #12
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a) That's ****ing rad
b) I really want to know what was on your desktop and start menu
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Old 06-23-2011, 12:48 AM   #13
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Quote:
Originally Posted by DNAsEqUeNcE View Post
hello there....

I'd like to get my hands on this...

I can only touch the Eeprom with my burner and Beepee's XDF definition files. I have no way to tune real time.

Very impressive, and absolutely a must have tool. I cannot afford an ostrich..
then you sure as heck cannot afford the factory unit he is using...while neat and I too would love to have access like he does, I'm guessing only a few of those devices exist in the US
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Old 06-23-2011, 12:49 AM   #14
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watching the video, it's just 3 wires out of the ECU. the rest is software?
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Old 06-23-2011, 01:10 AM   #15
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Yeah he says it's different, then it's the same as the factory tuning, then ohh yeah by the way the software and the special puter to run it all is $50,000.00. But he's figured it all out...
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Old 06-23-2011, 01:40 AM   #16
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LOL, I think it's more like putting 2011 technology to 1990 LH 2.4...maybe not very useful to anyone...yet if he has mapped out the chips that may be very useful in the other thread...
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Old 06-23-2011, 04:28 AM   #17
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what a pity that this is not usable for "normaloguys" like.. .. guys not being you :D

but anyway.. awesome work jaz ;)

i want, i want... when do you do vacation in northern germany ? :D

Maybe we could tune my 16v then hehe
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Old 06-23-2011, 04:47 AM   #18
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Awesome stuff man! The whole lambda correction stuff is amazing!
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Old 06-23-2011, 05:48 AM   #19
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Nice work, very impressive and I am sure any info you have would be very useful to the tuning community on here and for other LH cars. Hella impressed
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Old 06-23-2011, 06:16 AM   #20
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Quote:
Originally Posted by davidmacq
I think it's more like putting 2011 technology to 1990 LH 2.4...maybe not very useful to anyone...yet if he has mapped out the chips that may be very useful in the other thread...
That's right. The adapter is nothing you can buy from ECU manufacturers (Bosch, Conti, ...). I developed it on my own. The (software) tools in turn are common standard in automotive industrie (at least in europe). Sorry for confusion.

The adapter connects plug&play to the (E)PROM socket plus you have to solder 3 wires to the external SRAM. Contrary to some (all?) SAAB variants, the external SRAM is not fitted in our Jetronics. But even in our variants there is an autodetect for it, so it makes sense to emulate it.


Quote:
Originally Posted by blabla
The whole lambda correction stuff is amazing!
Oh yeah, thanks! Lambda correction is a big part of the software. Besides fuel calculation, OBD is another major topic. But there's is so much stuff inside. Think of acceleration enrichment, shift light, EGR-Temperature, consumption indicator, ... You can measure and calibrate everything


@MadDog: I will be there in August. Talk to Daniel, since I have no experience in tuning redblocks. Daniel knows about this adapter and should be able to write characteristics for it (as he's working in automotive industry, too).
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Old 06-23-2011, 06:32 AM   #21
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So.. just to think about you would start selling your selfmade "adapt0r" it would have no use if you dont own a fawkin expensive version of BoschOS 2.0 ? :D
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Old 06-23-2011, 07:02 AM   #22
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Originally Posted by MadDog_945 View Post
So.. just to think about you would start selling your selfmade "adapt0r" it would have no use if you dont own a fawkin expensive version of BoschOS 2.0 ? :D
Yes, that's basically correct. But it's not Bosch or any other specific OEM. The protocol I use is common standard in the whole automotive industry in europe. So there are different (software) tools available. That's a big advantage! The disadvantage is for us, that they are used during industry development only and that is how the license fees are intended. You cannot buy one for a single PC (well, actually I'm not quite sure if you could buy one as an end customer at all).
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Old 06-23-2011, 07:42 AM   #23
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Quote:
Originally Posted by Volvo in Electronics View Post
Yes, that's basically correct. But it's not Bosch or any other specific OEM. The protocol I use is common standard in the whole automotive industry in europe. So there are different (software) tools available. That's a big advantage! The disadvantage is for us, that they are used during industry development only and that is how the license fees are intended. You cannot buy one for a single PC (well, actually I'm not quite sure if you could buy one as an end customer at all).
then maybe there has to disappear a quite inconspicuous cd-rom from the office of your local it-guys?

mh.. its more the whole citrix cloudcompuing thingy whereyoure tools are based on mh? then its is a real pain in the a*** to get this things running...

one question.. was that your own laptop in the video ?

;)
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Old 06-23-2011, 09:23 AM   #24
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still, seriously. hmm.
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Old 06-23-2011, 09:31 AM   #25
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subscribed!

Looks great
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