djamps

iTrader: (1)

You should probably be seeing some knock. Mine always moves around a little. It's more likely the sensor harness ($35 or so from Z1). Swap that first...

NA&CH

iTrader: (74)

Having some issues with my set-up. Thinking its the Uprev maf.

Saving this thread when I get the car running properly again. Thanks!

Chris

Da_tigga

Ill do that man. Weird thing is i have no CEL or codes but ill give the harness a shot .

djamps

iTrader: (1)

FYI source code is now on github for any PHP guru's out there.

https://github.com/djamps/uprev-maf-tool

TheSteve

iTrader: (2)

Hey, thanks for providing the source code. I've got this setup on a webserver of mine so that I can play with it some, and I think you might have a typo in the class.uprev.php file on line 52. It currently reads:

$this->appv_max = isset($_REQUEST['appv_min'])?$_REQUEST['appv_max']:'';

when I believe you wanted:

$this->appv_max = isset($_REQUEST['appv_max'])?$_REQUEST['appv_max']:'';

I'm looking forward to playing with this a bit more, just need more time to gather logs. I plan on adding a filter for min/max MAF values, as sometimes I'm seeing a spike in my logs which far exceeds what the widebands are actually capable of reading (single record of 130:1 AFR while all surrounding logs are normal).

Thanks again, this is a good tool to have. Reminds me of MegaLogViewer from another project that had a Megasquirt ECU.

djamps

iTrader: (1)

^ nice catch! I'll update the code!

TheSteve

iTrader: (2)

Had a couple more questions for you if you don't mind.

I attached a screenshot of the tool running against a log I just made this morning. This is on my server, but I tested yours as well and got identical results. You'll notice I added a couple of filters to it for the AFR min/max as well as the coolant temp, but I was concerned about the values for AFR1 and AFR2 as reported in the center column.

I can see that the correction values for banks 1 and 2 are recorded separately, but it's looking like the AFR1 and 2 fields are locked together. I tested this by taking a copy of my log and setting all of my AFR1 values to "5" while the AFR2 values were left untouched (and in the normal 11-15 range). The tool shows the values as normal, appearing to ignore AFR1. I then inverted the test, with AFR1 having normal values and AFR2 as "5", and sure enough the output showed 5s across the board.

I've been looking through the code and I don't see anything wrong, but my PHP skills aren't great (more of a Perl guy myself) and I might just be missing something. Any idea where that fault might lie?

TheSteve

iTrader: (2)

I've made a couple changes which you might be interested in. There's a min/max MAF voltage adjustment for the MAF table, coolant filter, AFR reading filter. I'm admittedly not very familiar with GitHub so I'll just attach a zip of my modified files here. Feel free to merge the changes with yours if you think they're useful.

djamps

iTrader: (1)

I never noticed this issue at least with my logs. However uprev has changed the column names over time, perhaps the regex needs updating. I know if one uses the LC1, it will assume the same A/F for both columns since there's only one input. Shoot me a copy of your logs so I can test: amps@djlab.com

kilogram

iTrader: (1)

1. Thank you djamps for this tool. After swapping in R35 injectors Saturday, it's taken me about 4 flashes to get the car running almost like stock again because of the educated changes this tool lets us make. Being able to make large numbers of meaningful changes per flash is so helpful.

One suggestion I'd like to add to aid in tuning would be to get as much data as you can before you start making changes to the car. Log the system under normal/stock conditions so you can replicate those conditions once you've started making changes. This is especially useful for ignition timing, and how changing the K value for larger injectors completely smurfs up the load axis.

Basically, (and I've seen this implied, but never explained in the other tuning thread) when you change the injector size, you're changing the BFS column the ECU is looking up for a given load. For instance, I was hitting 14ms BFS with stock injectors at WOT (I live at 5400ft elevation, my numbers will be lower than yours). With the R35 injectors, I was only hitting ~8ms. This means that with no other changes to the tune, the ECU is now targeting the timing it used to run at 8ms BFS (roughly 35°) for WOT where it should be running ~28º.

Logging the system in stock configuration tells you what timing values you should be seeing in the datalogs for those load columns so you can make changes accordingly.

2. This would also be quite helpful: It would be nice to be able to exclude anything above, say, 20AFR so that WB errors/spikes/decel don't contribute to the overall AFR average. I've noticed that even when I try to exclude decel via a TPS minimum, I still get cells in the MAF table that average out in the 50s and 60s AFR. It may be something isolated to my car, but I suspect there's some contribution from decel cutoff as the ECU reads the TPS closing.

Only issue I can't seem to figure out now is a lean stumble around 2200rpm/4.3BFS/2.5-2.75MAF-V. I've added fuel in all those areas on the maf table and the comp table and none of it seems to make any difference. There must be something I'm missing... AFR jumps up to 18-20 right at that spot, then drops back to where it should be..

TheSteve

iTrader: (2)

I'll merge that AFR filter I added in with the latest version on github and will repost it here tonight

350z-Helsinki

iTrader: (1)

Can you use this tool with Rom editor logs?
I have LC-1 and can't get the tables to show AFR.
If I can't use Rom editor could you link an example to a logfile so I could see how it should look like. I don't know how to log AFR in cipher with LC-1.

ishyne22

iTrader: (3)

Afr's are also not being uploaded to tool for me as well. Rom editor is logging my lc-1 but numbers are not being transfered. I managed to make changes using just the o2 compensations. Anybody know why afr logs are not transfering to tool?

350z-Helsinki

iTrader: (1)

You can do this manually by logging A/F WB-B1 (V) & A/F WB-B2 (V). Rename the .csv file to .txt. Then import the file to excel. In Excel replace A/F WB with LC-1 data.

Then save the file in .csv format. Open the file in notepad and check that it looks like it used to except now with the corrected values. You can use the replace tool of notepad if it has ; instead of , like my file had. Then just upload the file and voila.

ishyne22

iTrader: (3)

Thanks finland!... that's thinking outside the box

juld0zer

Hi,
i'm fairly new to tuning so forgive me for the n00b questions.

I've uploaded a few logs to the log analyser and i'm confused as to what the numbers mean.

In a fairly large log, i can definitely see some A/F correction happening but the table in the analyser often comes back with 0/0 (1.00/1.00) or 0/0 (1.04/1.02) etc.

Am i supposed to multiply the MAF voltage by 1.04 (or 1.02, or average of both)?

I seem more likely to get 0/0 (1.00/1.00) when i upload a big log such as 3 logs combined into one.

Am i doing something wrong?

Uprevtuning

How do i use the tool. I dont see any .exe file or anything to run.

TheSteve

iTrader: (2)

It's actually not an executable as it was written in PHP. It's more of a web-app. You'll need a webserver with PHP to run it. It doesn't have to be anything fancy, even a raspberry pi can easily handle the task. The easiest way to learn is to google "install LAMP" which is an acronym for Linux, Apache, MySQL, PHP. You won't need any of the SQL stuff, but a basic LAMP server is about as simple as it gets. It's also possible to run PHP code from a Windows machine too, generally referred to as WAMP, WIMP, etc based on exactly what software is used.

Unfortunately I sold my Z and no longer have the code I was working on. It wasn't any different at it's core than what's in the first post. I only added some other conditions so you could filter based on more parameters.

Uprevtuning

I can't figure out how to use this

0jiggy0

iTrader: (13)

I know this is a web app but is there anyway to save this locally to check a log on the road without a wifi point?