If that is correct and so many choices of bins to start with wouldn't I be better off with a non Quad Four bin? Suggestions?Quote:
Originally Posted by Six_Shooter
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If that is correct and so many choices of bins to start with wouldn't I be better off with a non Quad Four bin? Suggestions?Quote:
Originally Posted by Six_Shooter
Tried a BFUZ.bin from a 7727 $A1 in the 8708 and that won't work, can't even get data and runs HORRIBLE, like 1 cylinder... had made a few changes like cylinder count, EGR off etc...
I still think this is going to end up a 7727...
Had it running decent today on 8708 but still had some errors. Have to go back tomorrow and see if I can get timing control? With Bypass connected and emulating no changes take effect, timing never moves. May have to work on ADX as well, it goes CL when warmed up but no BLM changes... also no engine RPM in data? I think I have correct ALDL, A145.adx? Most of the items work.
You know, if it was my vehicle, I'd just throw a '7727 in, pin it for Peak 'n' hold and go.
I've driven loads from injectors that the ECM shouldn't be able to reliably. You may need to scavenge a sense resistor from another ECM and solder it in parallel with the original, but only testing would determine that.
I went back and did some research. $6B is the mask used in 7749 and 8707, not $5C ARPY is used with 7749 without 1X detection hardware. There are three option flags changed in that cal from a $6B used in the 8707. I uploaded a stock cal ARPY along with one that has code 41 turned off. You'll need to adjust base timing and other values.
That would be cool if it worked, but difference tool in TP does not show 3 differences? Just 2, a cold AFR and Checksum...
And there is no $6B xdf... I can't afford TC right now as I think they have a $6B. EDIT: They do, but still no switches for 41 or 1x stuff...
Which files are you comparing? I used ARPY and I believe ANZF. I posted location for code 41 switch which could be shut off with hex editor. Options bit differences were bit 5 at address B and bits 0 and 3 at address D.
Edit: Mark, there are very basic definition files and some calibrations on the quad4forums that could be used as a starting point. They're older... date on the files is 2006. You might have to be a member to download them.
http://www.quad4forums.com/forums/sh...ad.php?t=6076#
I was comparing the 2 files you posted as one said "No 41.bin"
It was about a year or so ago I tried to join the Quad Four Forum but there was a glitch in registration, sent email to admin, tried a couple times over the weeks and just gave up!
The two files I posted are the same except that code 41 is shut off in one. They are both for the 7749 which doesn't have the 1X detection hardware.
Ok, these files were originally posted on quad4forums.com. One of the members there, racin17, spent a fair amount of time with a test bench and scantool to work out the xdf locations by hand before TC released their definition files. The xdf's do not appear to have been updated since 2006 but they could be used as a basis for improvement.
Registration worked today! But for what is available in those files it's hardly worth it!Quote:
Originally Posted by 1project2many
I'll see if I can add those bits to the XDF and test them, doing bits in hex is a little confusing to me... but then anything that requires intense thought is a little confusing right now! But even then I'm having error 26 issues QDM which could be anything from IAC, CCP, etc... Even if I had TC, they are not there either... Same thing as error 41, when it comes on I think it's LHM and runs worse, no changes to fuel or spark are responsive... and no 26 to turn off in definition, no disassembly to work with, back to the only reason I was hesitant of starting with this ECM in a conversion. Plus when I started this for the kid I did not know I was sick and what I would have to go through. If I had I would have chosen another simpler route instead of an experiment and project.
Looking at $8D and $A1 XDFs which is for DIS sure looks like I'd have been done a long time ago!
I've only got a couple weeks before surgery then I'll be laid up for at least a month (if lucky) before I can do this stuff again so need to jump on Plan B (7727). Going to give these bits some effort today, but weather is beautiful and may stand outside in sun and clean out my interior from the winter. Then pull low injectors as the kid found a set of high injectors, already have a 7727. So all I need is wiring diagrams to re-pin some of the changes between 8708 and 7727.
Strange it does not show in TP difference tool when comparing?Quote:
Originally Posted by 1project2many
Yeah he did some great work for the time and I applaud his effort! :thumbsup:Quote:
Originally Posted by 1project2many
But not much there to help me with this transplanted/hybrid system to a completely different motor. Even if I can get by some of these initial obstacles like error codes for the hybrid or systems no longer there... will I end up without other tuning parameters I need?
I'm thinking resistors with Low Z injectors would work with the '7727.
dave w
I'm thinking the '7727 would be just fine...
In the '7749 mod doc, it mentions replacing the sense resistor with one of half the value (or two originals in parallel) for driving 8 low-Z injector (4 per injector driver), I know it also mentions replacing the driver, but. I have used the '7749 with 6 low-Z injectors with only swapping out the sense resistor and it was fine for a few weeks, while trying out the larger injectors. I ultimately didn't have time to tune for the larger injectors and was not the source of my issue at the time anyway, so I swapped back. The 4 cyl would just be half the injectors here in comparison to the '7749 mod doc.
In this case, I'd parallel up the sense resistors, and have at it with the '7727.
An alternative would be to add a second injector driver to a '7727. I've looked at doing this with a '7730, but haven't decided just how many components I'd have to pirate from a dead '7730 to make it work. I know I could do it by simply adding the driver MOSFET, a few of the supporting capacitors and sense resistors, then just jumper the gate signal to the added MOSFET. I am going to try this at some point, all of the space is there on the '7730 PCB, I'd imagine it is on the '7727 as well, but I haven't looked.
an unmodified 7727 in peak/hold mode would be...... 4 amp peak, 1 amp hold? i don't know if that will hold 4 injectors open.
if the resistor mod and a second driver were added(and operated open-loop while driver 1 is closed-loop), that would bring it up to 16 peak/4 hold, that i can see doing the job.
Ain't happening!
Going to change the injectors so I can run a stock ECM. This is a serious off roader and some trails are a full day trip. If something ever happened that it needed a ECM, which would be WAY down low on list of things that could happen, then it would be an easy fix.
I don't think it would be a problem.Quote:
Originally Posted by RobertISaar
If anything, this could test out a known code in the garage and verify that there are no other issues. Once other injectors are found, simply re-pin the connectors for saturated injector driving... Seems like a simple win-win to me.