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Check my TunerPro Data log?

Keitha

Keitha

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Attached is a short data record:
Recently rebuilt my 383cid, LT1 type full roller cam, TBI upgrades, 14psi fuel pressure, Headers.

Thanks much for looking at this. I am OK at the basic tunning, but still learning the details. Your Gearhead EFI site is a great resource as well.

Keith
 

Attachments

  • 3-21-13amx.xdl.zip
    85.9 KB · Views: 10
Last edited:
Something bad happened! :eek1:





























Bet that scared you? :haha:

Data log is blank?

I edited your title for a better description...
 
eagle mark said:
Data log is blank?

I edited your title for a better description...
Click to expand...

Wierd, it works for me when I open the zip folder. I uploaded a new file, let me know if that does not work.
Just to make sure I am doing it right: I data log, save the file (xdl file) and that is what I am posting. Is that correct?
 
It is a 303kb file and plays, but there's no data there? :dunno:

Never seen one corrupt from zip before? But you could email me it without zip?


Here's how to data log just in case, I think you got it right because it's an XDL file...

TunerPro RT hooked up to truck, ADX file loaded, Connect and you'll see data and a Connected window on bottom of screen. Then Acquisition Record and the connected will change to Record. When done Acquisition Stop and you'll be prompted to save the file with a name. I think if you just disconnect it does the same.

What data ADX file are you using?
 
I'll email it to you when I get home this evening - Send me your address. It all works on my end, I can replay and export to excel, so not sure whats going on.
I am using a $85 ADX from Moats.
I should have added that I have the 16147060. Stock bin, and what I started with was the AWBP ( just read the chip using my burner).
 
Well that would explain why I can't see data using $42? :doah:

But your data has glitches. I fixed that ADX file long ago, I'll attach new XDF and ADX files I've worked on.
 

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  • $85-16147060.zip
    19.9 KB · Views: 9
I just grabbed the XDF and ADL files that you posted and I will try to record some data tomorrow. I'LL post what I get.

thanks again,
 

Attachments

  • BDPL-$85-91_V-Truck_5_7TBI_4l80.zip
    18.9 KB · Views: 8
So is the BDPL bin file a "stock" tune for my Suburban - same as the AWBP? Should I use the BDPL as the base bin and copy my VE & Spark table etc into that file?

What to you do for an "economy" tune with this? There is no highway/cruise perameter that I know if in the XDF.

The amount of work you put into this in incredible. I can't tell you how much time I have into chasing that glitch. With the older ADL I was using, it only seemed to glitch at higher load levels. I assumed it was related to a ground or other issue with the truck.:dunno:
I really appreciate all you have done for the OBD I tunners here.
 
Keitha said:
So is the BDPL bin file a "stock" tune for my Suburban - same as the AWBP? Should I use the BDPL as the base bin and copy my VE & Spark table etc into that file?
Click to expand...
Yup! Well sort of, GM thought there was something wrong and tried to fix it three times before the final chip of BDPL.

There's no Lean Cruise available for that PCM, nor would it do much good in heavy trucks. The way to tune for economy is adding spark and watching MAP and TPS, lower MAP and lower TPS at same cruise speed = engine working more efficient.

Before you go adding in a ton of spark make sure your knock sensor is working. When you find knock back off 4 degrees safe. There is an area of detonation that does not cause ping/knock, it only produces less power more heat in piston and lots of rod bearing wear...

I don't remember if I built Spark Advance and Knock Retard history tables in that Data ADX file? But if not I did do a write up on how to make them properly:
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?444-Making-History-Tables-in-TunerPro
 
The History Table is great! I never knew it was there. When the cells are populated in the history table, does it calculate the average result or just display the last result recorded?
Never mind, I just found the answer in the drop down at the top. I can select "most recent result" or "History"
 
OK, Here is a new data run from this afternoon - still using the AWBP. Let me know what you think.

thanks again,
Keith
 

Attachments

  • 3-24-13a.zip
    167.1 KB · Views: 6
Unless my ADX file is off... we are going to start calling you Sparky! Wow that's a lot of advance. You sure your knock sensor is working?

BLM fueling is pretty good.

IAC counts go to 0 at idle and TPS is a little high, turn the throttle screw out a quarter turn.

Do you run E fuel? If so you can get the BLM numbers down real quick, they are a little lean, not bad, in ballpark. Set Stoich AFR to 14.2 for E fuel. Then go back to BLM numbers for VE adjustment's.

I added a Spark Advance and Knock Retard History table for you. Didn't see any knock.

The glitches are gone, these PCM do get one every once in awhile it's common. But working well.

Do you know how to use BLM to adjust VE? I'll add a spreadsheet for you to help.
 

Attachments

  • $85.zip
    28.1 KB · Views: 1
eagle mark said:
Unless my ADX file is off... we are going to start calling you Sparky! Wow that's a lot of advance. You sure your knock sensor is working?

Do you run E fuel? If so you can get the BLM numbers down real quick, they are a little lean, not bad, in ballpark. Set Stoich AFR to 14.2 for E fuel. Then go back to BLM numbers for VE adjustment's.

I added a Spark Advance and Knock Retard History table for you. Didn't see any knock.


Do you know how to use BLM to adjust VE? I'll add a spreadsheet for you to help.
Click to expand...

I do know how to use the BLM... I've been at this for a couple of years, but never really got past the BLM/VE and Main Spark table tunning. Your History Table tutoral was great. I used to export the data run to excel then spend hours manually going through the data. This will save a ton of work. Do you look at the "running average" or the "history average"?

I will have to look into changing Stoich. Not sure how to do that just yet. Any advise on that one?

On the spark advance: I never hear the motor knocking. Knock sensor is new when I just installed the motor a few months back. I supose I can test it.
I am not good with advance curves. Does the entire curve look advanced or just a certain part of it?
 
Looks like the entire spark table is advanced? It may be because of old XDF files around, some have main spark bias and some don't, if you take from one and pout in another you add 10 degrees.

Stoich is easy, find it, change it, burn new chip. Gasoline is 14.7, E fuel depending on content of ethanol is lower and 14.2 works well. This is a major flaw of people using AFR gauge to tune, even if it's set up right. Lambda works better. AFR gauges are not, they are Lambda controllers and signal is converted to AFR.

Old gasoline 14.7 AFR = 1.00 Lambda WOT power = .84 Lambda
E10 13.8 to 14.2 AFR = 1.00 Lambda WOT power = .84 Lambda
Your narrow band O2 sensor DOES NOT adjust to 14.7 AFR, it adjusts to Stoich of fuel. Which was 14.7 AFR when these trucks came out but fuel has changed since.

Look at you VE and Spark tables in Graph mode to see if any big dips or spikes. This thread is for another ECM but the procedure and theory is the same.
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?1024-7747-ve1-ve2

BLM history average. Getting good data is also key. Some of your data is skewed because you entered PE and DE and DFCO. Start data log when warmed up and driven, 10% throttle till it runs out or safe, 20%, 40%, etc... steady state throttle. Look for sample counts and throw out any under 3-5. Leave a few minutes of idle at end of log for idle tuning.

Smooth table!
 
- Where do I find the PE table in your XDF? I can not seem to find it. Is it the same as the WOT table?
- I found the Stoich and will change that on my latest bin.
- Do you use the smooth funcion for your VE table on the entire table? I played around with it by selecting the entire table and smoothing to .6 and it made the graph look great but I did not burn a chip with that yet.
 
Yes WOT is PE.

I'm not original author, there were 2 of these floating around unsigned, I combined the 2 and double checked to the disassembly for accuracy.

Smoothing, just do rows or columns, not whole table. .9 is a little, .1 is a lot and to much. If your table has big spikes then use the graph and grab that point to get it closer, then rows or columns.

Smoothing is an acquired talent. Use compare to load your original saved bin, compare to your smoother table, should be smooth, not drastically changed.
 
Truck is running good, but I still have some more tuning to go. I lowered the Stoich to 14.5 to see what it does.

What does lowering the Stoich do? Should the O2 swing counts now trigger at 14.5 (where I have it set) rather than 14.7? Would that result in a richer tune?
 
Stoich or the term Stoichiometric ratio describes the chemically correct air-fuel ratio necessary to achieve complete combustion of the fuel. It is represented by the Greek letter, lambda.

Stoich for gas is 14.7 AFR. Stoich for Ethanol is ~9.00AFR. That means that Stoich for E10 would be (14.7 x 0.90) + (9.00 x 0.10) = 14.13AFR.

Start with 14.13 for Stoich or Desired AFR if using E fuel which most everyone is. Unless your on non ethenol or race fuel. It is the first calculation used in fueling as represented in code below as 1461.5, actually it's a little rich = 14.615 and gas is 14.68. Changing Stoich to 14.13 changing the fueling algorythm to 1413.0 in code below.

Fueling routine for 454 with 80 lb/hr injectors.
Code: 
  TBI 7.4L 80 lb/hr = 80.50 lb/hr 
 Val = 1461.5  * (VOL/RATE)
 VOL  = Vol of 1 Cylinder in liters, (0.930L)
 RATE = Injector flow in gms/sec 7.4L = 10.144 gms/sec (80.50#/HR)
 (VOL/RATE) = 0.091679 l/gm/sec
= BPW 142

BPW of 142 is 14.2 Msec / 2 for Sync fueling is 7.1 Msec and injectors go static at about 3600 RPM, they just dump fuel and add from PE/WOT so it works after 3600 RPM but this is why perfect AFR at WOT is hard to obtain in TBI systems and high RPM....

It's the proper starting point in a tune, if you don't do this your VE can be fixed for perfect BLM but they are off by 48.5 or in AFR .485

Read this to understand more on fuel, AFR and Lambda.
http://www.gearhead-efi.com/Fuel-In...e-E10-Wide-Band-02-sensor-tuning-using-Lambda
 
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