caboboy

OK, keep in mind I was born before television was invented, so please be tolerant with me....

I'd like to play around with the MAF voltage in Tunerpro, but I don't really understand how to edit the hex per RBob's original thread even with the great step by step shown here in post 2 by Lucid: https://www.thirdgen.org/forums/diy-...-tunerpro.html

I've tried it a couple times, but I'm definately missing something in the hex editor steps.......I'm either in the wrong location(s) or just missing an entry or two, I can't get it to show up in my datastream. Can somebody walk me through it please? Thanks!

88gunmetalgta

iTrader: (1)

The hex editor part is the easiest part from following that walkthrough. The differences arise in the way you exit the datastream definition, since that tutorial was in TunerPro 4.

The first 3 steps are EXACTLY as shown in the pictures. you change the "60" to "F3" on the first entry of the 00000680 line.(the actual location is $67F, which is the last entry in the line above, but that remains as 00).

You can ignore this part if it just confuses you In hexadecimal, you count like: 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F.
So to find $67F, scroll down to row 67, and count across the row until you get to the F entry (which is gonna be the last one in the row).


Bear in mind, this location only applies to $6E! If you have a different mask, it will likely be a different location.

caboboy

I may have it thanks to your explanation, I can't wait to give it a try this weekend!! I was confused putting things in the wrong places (the end of line 670 and the beginning of line 680)and was even trying to use dollar signs when things didn't work right. Thanks a lot man!

I am such a dinosaur! .........

I'm an old time gearhead to be sure, but to say this computer stuff has been a steep curve for me is like saying Mt. Everest is a hill........

How does this look?

88gunmetalgta

iTrader: (1)

Looks good to me! Does it work?

caboboy

I won't have a chance to try it until the weekend sometime, I'll be sure to let you know. Thanks again for your taking the time to help.........I was lost!

gbayfisher

I have been trying to do add maf voltage myself. How and what do i edit in the ADS for the final steps when using TPv5

88gunmetalgta

iTrader: (1)

1. Acquisition->Edit Definition
2. Expand "values" and choose an entry to replace. (I used "Startup Coolant Temp", since I don't really need that in the datastream)
3. Change the Title to "MAF Voltage"
4. Change the Unit Display to "Volts"
5. Change the range low and range high to 0 and 5.
6. Click on the "Conversion" tab at the bottom, and then click the "Set" button.
7. Enter X*.019608 and click "OK"
8. Click "Save"
9. Check and see if it works!

gbayfisher

Thanks, that seems to work. I also added no offset to the equation, is that right?

88gunmetalgta

iTrader: (1)

Yep.

caboboy

No cigar for me on today's datalog.......the value stayed frozen at 2.69 (see attached). Could it be that I also need to edit the range entries to 5 & 0 instead of 255 & 0?

Thanks!

gbayfisher

Lol, mine froze as well! I have messed up myself so I did it over again, wil test tomorrow.
Yes you should change the the low and high values. As posted above, 0v- 5v.

caboboy

I just tried it & the entry was frozen to a different value......3.18.

gbayfisher

Mine did the same thing. Froze up at two different values. Not sure where to go from here! Has to be something simple.

88gunmetalgta

iTrader: (1)

Looks like the datastream definition is right. Did you burn a new chip (or point your emulator to the new bin) after you made the changes in the hex editor?

gbayfisher

Not sure if the question is directed at me..... Since we are having the same issue I will respond first with a 'no' I use the autoprom and do not burn chips inbetween. If i did burn every time, i would have commited suicide by now, or bought the ebl or some other form of flash ecm.
I am not sure the autoprom is all that reliable however! i have noticed some funky 'stuff'

88gunmetalgta

iTrader: (1)

I edited my post to be directed at you too lol

Point is, you have to make the changes in the hex editor, commit the changes, and then save your bin.

caboboy

.......and I'm using Burn2 w/ T/P ver4. I bet it's something pretty simple, maybe we're doing something wrong in the equation?

gbayfisher

Got it now, I checked and it is saved in another bin. I switched bins and assumed or forgot that that the hex change is in the bin, and the data stream is in the adx file!

88gunmetalgta

iTrader: (1)

No, your equation looks good. I'm betting the change you made in the hex editor got lost somewhere in the shuffle, whether you clicked the X instead of going to action->commit changes, or the bin didn't get saved, or you grabbed the wrong file when you burned your chip. Something like that.

88gunmetalgta

iTrader: (1)

Sweet! now go try it lol. Make sure we got it figured out

caboboy

ok, we may be above my ceiling here...... the bin is part of this procedure? I must be missing out on an entire list of steps to get this working.

88gunmetalgta

iTrader: (1)

Ok, We're we're changing two different files here. The first step, when you went into the hex editor and changed 60 to F3, is a change to the .bin file that you burn to your chip and put in your car.

This points the ECM to a different value to send through the ALDL, instead of sending the Startup Coolant Temp value, its now sending the MAF Voltage value.


The second part is editing the .adx file (.ads in TP4?) This is where you edit the title and the units you see in your datalog, and also where you put in the conversion factor, since the actual value the ECM is sending doesn't make any sense to anything but a computer.

caboboy

Thanks!

I need to get to get awaay from this for a while..................all I'm getting now is a mismatched ADS & XDF file.

gbayfisher

I like to save my changes as a new bin ie; 'Save AS' to make sure it works, if not, you have the previous bin to go back to.

Try it again in the morning with a fresh mind.

caboboy

OK, I got it thanks to all the help from you guys!

Now...........I gotta figure out what I'm gonna do with the new info. At first glance it doesn't look like there will be much advantage. Maybe it can somehow give me more resolution to the data points........?

Thanks to everybody!

gbayfisher

I am not too sure myself if there is an advantage over g/sec since they both do the same thing, which is refer to a specific area of the table.

I just got volts working as well, but since I started using the program in g/sec, that is what i prefer to look at during the data logs.