Tuners Rejoice! Free Tuning For M4.4!


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I would like to have the AC bin mod on/off by values of 0 and 1 in tunerpro. Wouldn't it work if the conversion factor in the xdf is X/33387? It would mean that a value of "0" will put the value of 0000 at adresses 0x6AC8 + 0x6AC8 (AC mod activated) and the value "1" would be 826B at 0x6AC8 + 0x6AC8 (AC mod deactivated) if 2 bytes is choosen (826B in hex is 33387 in decimal). Examples is for the manual bin!

Would it work? It would be nice to have the mod changed by simple numbers of 0 or 1 instead of hex values.

// Turboforslund

Yes it will.
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Attention: The first 30 or so pages of this thread are outdated. Please refer to the M4.4 Wikia article where all the relevant information is currently being collated. Before asking any questions p

Crush it.

After alot of testing and rewriting code, we finally got a useful new mod working. As we all know, some time ago my dad Piet found out how to convert to bigger maf housings with the maf factor. Conver

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Seems like a plan.

Unless anybody has any objections? Tmm9 is this alright with you? (as you've started this thread).

No worries. If it helps the community do whatever you would like!

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Hi,

I would like to have the AC bin mod on/off by values of 0 and 1 in tunerpro. It would be nice to have the mod changed by simple numbers of 0 or 1 instead of hex values.

// Turboforslund

Why would you exactly?

The bin with the mod is only suited for a M43 car as the bin without the mod is only suited for M44 cars.

I will come with a little app with wich you can see whether a bin contains the mod or not and with wich you can chance safely a bin into a bin with the AC mod and can change it back again,

Edited by Piet
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Hi Piet,

My intentions was only to easy make it visible and changable (like the diagnostic disables etc.) inside tunerpro for people w/o hex editing skills. 2 values for the a/c mod, manual and auto version. I do believe most people will only work with their own car and will most likely never use the ecu in another setup but I will swap in between 4.3 and 4.4 cars a bit more and I just thought it would be nice to have it viewable "in the list".

That's the reason why I wanted to do the a/c hardware mod by a switch on my ecu.

Now that you cracked the bin resulting in a far better functionality I will not need the HW mod anymore.

My intentions was only a xdf improvement.

// Turboforslund

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Turboforslund, the way you said above (using X/33387 as conversion factor) will work fine.

Just be sure to use range low (0) and high (1), integer, and 1 significant digits.

That way 0 will mean mod ON and 1 will mean mod OFF. You can put that in the description of the scalar so you don't forget it.

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@Turboforslund

I understand,

There might be a danger with it though.....

Don't know for sure because I didn't try it, but if somebody with a M44 car sets the XDF accidentely for a M43 car, his aircon might be damaged.

Therefore I think its better that it's not a general option in the XDF

B.T.W.:

The otherway around, a M43 car with a M44 set for a M44 car is safe, it certainly won't damage the aircon, the aircon just will not work with it.

Edited by Piet
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Don't worry. Next release will contain this mod in de xdf. I think I can make it in such a way that a simple 0 - 1 scalar is all that's required. I've also made a maf scaling routine, so you can simply enter a maf scaling factor in TP. Tomorrow I'm going to ski for the weekend. Expect a new release at monday or tuesday.

Edit: safety of m44 aircon is something to consider. I will think about a solution.

Edited by venderbroeck
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That was'n entirely true what I said there, for manuals it's only a matter of two soldering bridges to make a non turbo ECU suitable for turboregulation.

I have to admit that it was a fruitless and rather low level attempt of me (yes I am ashamed of myself :blush: ) to keep the non turbo M44s cheap.

But you don't use the M44 turboregulation?

Are you using a boostcontroller instead?

Why don't you use the excellent boost regulation of the M44, that way the boostregulation is much better integrated in the whole load concept of the M44

Especially now your load isn't maxing out anymore.

I have never used the onboard TCV control - I used to use an Apexi AVC-R, and for a couple of years have used the Greddy OLED. It gives rock solid boost control with no spiking or drop off. I can easily switch boost levels beyond the two presets, by tweaking the duty - it levels out very quickly after adjustments.

I don't know how well the onboard TCV would regulate the large EWG (Tial44mm) the Greddy has no problem.

I believe it would take some time to figure out how well it can handle the much higher spring rate of the EWG, compared to the low rate IWG actuators it's designed for?

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lookforjoe, I believe M4.4 can handle and manage big turbos like yours with the advantage of being able to do it based on throttle angle and rpm.

I think the higher spring rate of your EWG would not be an issue. How stiff it is?

With my 18T, I had been using a 0.8bar WG spring and actuator arm fully tightened (i.e. cracking pressure around 0.9/1bar probably) with no problems. I may just have some spike of 2psi if I quickly go WOT in peak torque rpm but other than that no spikes and solid boost all over the rpm.

If I had loosen the actuator arm a bit I know I wouldn't even have the spikes.

You can give it a try. Just start with really low duty cycle and go increasing it to see how it goes.

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Has anyone monitored the highest address line to see when/why/how often the different memory banks are in use?

I could check this out, although I'm not sure if there is anyway to datalog ram hits using an Ostrich. It might be possible to interface with the Ostrich in a custom program, but I'm not sure if the source for the Ostrich is open.

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I'm all for a new release. It may be wise to make binaries for "release 6" available with the bits set "properly" for the air con modded ECUs as well as the unmodified hardware, so people will have time to reverse the mod on their own time. The next release could then require people to have modified their hardware back to normal and would only need a single binary provided.

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I could check this out, although I'm not sure if there is anyway to datalog ram hits using an Ostrich. It might be possible to interface with the Ostrich in a custom program, but I'm not sure if the source for the Ostrich is open.

http://support.moates.net/ostrich-20-developers-corner/

http://static.moates.net/zips/firmware/protocols/Moates%20Hardware%20Protocols%20v19.zip

I was thinking more of a direct physical address line approach, but if it can be done with the Ostrich, that might be simpler.

Personally I don't have a car with M4.4.

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Lookforjoe: The onboard TCV of the 850 appears to have a small diameter valve which may make large fast adjustments on bigger actuators a problem. The newer one in the X70 cars seems to have a bigger diameter valve to control larger actuators. Regardless, the ECU is capable of driving other brands like the MAC tcv (IPD sells these as their own brand) and those should be more than capable of controlling larger wastegate actuators. There is a thread here volvospeed.com/vs_forum/topic/162732-m44-boost-control-actuator-psi-selection-mbc-for-a-19t where mercuric and others discuss how to go about this and what the pros and cons are.

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