MaxLean

I'm helping my dad tune his '90 and instructed him to purchase the APU1 auto prom setup from Moates. I'll be doing all the tuning and am already very familiar with Tunercat, LT1 edit, and Datamaster with my '94 LT1, but this Tunerpro is new to me. Apparently, you need an XDF file to edit the bins (already found this file), but to datalog, you need an ALDL def file. This I have not been able to find anywhere for the '90 ecm. I would like to be able to use Tunerpro to do the datalogging, real time emulation, chip burning, etc. If I can't get or find the ALDL def file, I'll be forced to use datamaster for the logging. Can anyone help? I've tried the public and private file repositories located at Tunerpro, but only found the appropriate XDF file.
Thanks
Scott

tpepmeie

Current version of TP is difficult to connect to any Corvette ECM, due to chatter on the line. It is doable, but takes patience.

You can easily make your own ALDL definition file. The ALDL protocol and stream items are defined in a file available on the DIy-EFI site. ALDL.ZIP or something like that, and you need to look for the document A.114, which is the 90 listing.

Todd

Aurora40

I think this is what Todd is refering to:
ftp://diy-efi.org/pub/gmecm/ALDLstuff.zip

Dominic Sorresso

Max,

I trying to help my friend Pete tune his 91 ZR. I have several .xdf fr this but they don't appear to be very complete. SHould be quite a few more params to it. Where did you get the .xdf and could I see it?
Thanks.

MaxLean

I got my xdf files from Tunerpro's file area. I believe it was a private section that the password moates provided got me into, but I'm not sure. I got two $8e and $8ea. The $8e would work with one of my prom images but gave me garbage with the other prom revs. The $8ea worked for the others. The file sizes are pretty small so I could email them to you if you want. Both seemed to provide the same amount of parameters. Still looking for the Datastream def file. Making my own as the someone previously suggested seems pretty daunting unless I'm missing something (which I likely am ).
Scott

-=Jeff=-

Hey Todd the LT5 and L98 of the same years both have issues connecting to Tunerpro.. I have not been able to connect to tunerpro with my 91 electronics, both with tunerpro and Scannerpro...

Any suggestions?

MaxLean

Bringing this one back. Never did find an ALDL def file for tunerpro, so I've been using the trial version of Datamaster for now. Has anybody found a def file yet?
Scott

-=Jeff=-

which definition?
I have a ALDL file for ScannerPro that works for the $8D on the 90-91

Dominic Sorresso

Jeff,

Todd suggested going to DIY and getting the ALDL datastream A114 which is the one for the 90. My 92 uses A171. I also have one for the 91. The 91 and 92 compared virtually word for word. I could take a look at the 90 and see if its any different.

-=Jeff=-

Right..

I have most of them. I just need to compare the 90 $8d and modify as needed for the Z

ShawnZR-1

Hmmm, all this tuning talk has piqued my interest....
So, I downloaded TunerPro but it apparently doesn't come with the XDF file. Where would I find that?

Also, I'm getting confused, in one place, it says it's an $AF definition, in another, it's $8F... which one is correct for the 1228331 ECM?

-=Jeff=-

the better scanner is www.scannerpro.net it will be added into tunerpro at some point. These are the Correct Definitions for the ZR1. There are none made for the ZR1 that I have seen, I assume Todd has made some. I have one for a 1990-1991 L98 I am planning on re-writing for the 1990 ZR-1 as all the CCM handshaking is working so I need to just get the right data format for the Z.

here is the correct Definition List

90 Corvette ZR1 (LT5)
$8E
1228331


91 Corvette ZR1 (LT5)
$AF
1228331


92 Corvette ZR1 (LT5)
$D0
16163860 or
16163993


93 - 95 Corvette ZR1 (LT5)
$F0
16163993 or
16196394

MaxLean

You mention $8e for the '90. I found an $8ea as well. When using the $8e I found that the data in the bin was wrong (example: rev limit was at 30 rpm). Using the $8ea settled all that and everything works as expected. I'm not sure why there are two xdf's for the '90, but thats what I experienced. Were you ever able to get tunerpro or scannerpro to work around the ccm issues? I'd really like to get the scanner in tunerpro to work as it's integrated nicely with the editing software. Using TTS Datamaster works well for me and I may purchase it after the trial period is used up, but it is obviously not integrated with tunerpro, which I guess isn't really necessary. What software suite are you using?
Scott

ShawnZR-1

Ahhh! Thanks for clearing that up Jeff!

So I managed to find a couple of xdf's, but why are some appended with "A"? Have you looked at any of them?

FASTAZU

tpepmeie

All of the model years have two slightly different calibration layouts. The original issue calibrations were superceded by the service calibrations (ie, AYBK, BFXB, BPPA and BMCB). All the calibrations issued after mid-1993 have, if I recall, three additional bytes as compared to the original issue calibrations for that model year. These bytes were added to affect warm restart, closed loop fueling. They effectively set a floor for the integrator for a period of time after a warm restart.

Todd

-=Jeff=-

THANKS Todd!!!


Now, According to Mangus ( Tunerpro/ScannerPro Creator) You are lucky if you get it to work. He never set it up to del with the CCM in a good way.

ScannerPro is a replacement/ upgrade as a scanner for the one in tunerpro. it is the same layout as tunerpro.

I have not gotten my Z to connect yet, but I have not made a Definition file for it.

Now, I have a definition for the 90-91 L98, I think the Handshaking should be the same for the L98/LT5 of the same year, once I get the Definition file done I will try it on my 90 Z.

tpepmeie

It will work, but you have to send the silence chatter command first. Even then, it can be pretty finicky, but will work eventually.

Just to clarify... my post above was referring to the calibration masks, not the ALDL definition file. I think we might be having two different conversations here....

Tyler Townsley

I think you are right.
ALDL def file= you are looking at what values are being fed to the ecm from various sensors or calculations the ecm does to report information to comply with OBD1 mfg protocall requirements.

Calibration mask= A file that allows you to change the code used by the ecm to calculate fuel and spark requirements based on information from the sensors.

To do on-the-fly tuning you need both and a way to see the data real time. The chatter being talked about is 'noise' in the communication that prevents the operator from doing both at the same time. Currently most people log the data, review the log then change the calibration.

Tyler

Dominic Sorresso

Todd,

Am I correct in saying that the ALDL streams appear to be the same for the 91 and 92 motors? I've reviewed the files from DIY and everything seems to line up.