89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
Well it's going to be a few more days because I am an idiot and let Micro$oft f*ck me. I lost all but four entries in the xdf because I hadn't saved it and brilliant windows 10 decided to install updates and reboot without any confirmation.
Of course the hard work is documenting the disassembly so this really just means starting over on the tedious data entry. I will certainly remember to save periodically from now on...
I have not been so angry in a long time.
https://www.pcmhacking.net/forums/vi...php?f=8&t=4671
Yep, he's working on the OBD2 stuff.
Here is a work in progress xdf. I have found that it matches all bins that I have except BRMM which is odd because it does have an EC mask. Anyone have any idea why a bin with the same mask has a different calibration layout, and any good ways to detect that (or inform the tunerpro user how to easily and confidently check). Maybe the BRMM bin is from an already modified memcal done by a 3rd party vendor...
I have successfully used this xdf to modify shift points, fuel, and base timing (starting with a stock BPBS bin), so I know that the checksum etc works.
It's still fairly basic at the moment but does have a lot of the common stuff that one would want to change. If anyone has any requests please speak up and I'll do what I can. I do plan to continue to expand it so expect updates in the next few weeks. It doesn't currently have any EGR stuff except for the DTC enable flags. I also haven't yet added a way to modify the pump calibration tables (or emulate changing the resistor), but I'm not sure if that's very useful since you can change base timing and base fuel.
If someone with permission wants to copy the xdf to:
http://www.gearhead-efi.com/Fuel-Inj...C-Turbo-Diesel
that would be cool.
Admin note: XDF and disassembly also located at:http://www.gearhead-efi.com/Fuel-Inj...ll=1#post64990
Thank you!
Just focus on the $EC mask for BPAA - BXPY is the latest rev. of that code base for auto trans also. It's a waste of time to look over the other masks for light duty applications.
What kind of ideas do you have for re-organizing code? I've done some but curious what other ideas you have after seeing the disassembly you found.
I wasn't planning to do any reorganization unless/until I have a personal need or someone requests something that can't be done with the current code.
I don't have one of these vehicles and the friend who's truck I tuned is very happy with how it's running now... My current plans are just to continue cleaning up the disassembly, complete my understanding of how the fueling works and continue to add accurate documentation to the xdf along with the more esoteric parameters.
A couple things that I do have in mind would be EGT logging and code modifications to properly handle an overdrive unit.
I'm having fun with this so i'm very tempted to buy a truck for myself but I really need to hold off for a while until i get some of my todo list taken care of...
Greetings from Finland!
Happy to find this great page. Thank you for it.
Just uploaded my suburbans BPAC bin. Hope it shows. It is my first time in this page ;)
This bin is from 1995 suburban. No EGR's from factory.
Hex format looks much like BPDP bin.
I have already moded the turbo wastegate to spring loaded one.
I read ECM data with GMTDScan.
And have Dataman programmer + some flash chips.
Can't wait to be able to tune harder shifting, less timing & more fuel.
But still have some problems with TunerPro.
Hope I can contribute something to this awesome page :)
Thanx
-jh0
89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
Probably because one or another axis label isn't filled in. I've been slow doing the axis because I want to ensure they are accurate. I'll try to get those finished soon but please tell me if there are any specific ones that you need and i'll prioritize them.
In the meantime you could fill them in with a simple sequence (0,1,2...) and the graphs should work.
Got it working. At last some tool to make changes.
Can you tell what to change to get firmer shifts?
Shift time or pressure maybe?
Thx.
I see that now about the axis, I'll fiddle with it some. I don't have any in particular yet, was just playing around with it.
I have a truck that is a manual pump conversion and I'm looking to try and fix the shift points, and turn off error codes.
Thank you very much for your work.
89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
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