b3tuning

Hi,
I haven't forgot about this project.
I have been very unwell with extreme pain for the last couple of weeks.
I am on large doses of very powerful pain medication, so my brain doesn't work correctly while under the influence and it makes me sleep a lot.
I have just come back from the doctors again for different medication again, tonight.
I have been working on the PCL file for this along with a few other jobs.
I needed to know how much boost he wants to run for many reasons, boost cuts, boost control target tables etc, working out what his final fuel pressure will be with static pressure plus full boost pressure etc.
Spanning the Y axis on Fuel and Ignition tables and any other tables that will be MAP,MGP etc based AXIS.
The more information I can gather the easier it is to set things up.
Setting up PCL files for cars that aren't in front of you is quite difficult hence for the many questions.
Yes , you are all correct, I DO NOT WORK FOR ViPEC.
I enjoy helping others where possible.
When I first started I could only ask a random question here or there, I didn't have the luxury of FORUMS or the Internet for help.
99% of what I know I have taught myself through testing , reading and studying etc.
It is something you never stop learning.
I have been doing this stuff for close to 20 years and there is still so much more to learn, I had many frustrating times trying to sort out issues etc.
This is why I try to HELP where possible.
I also strongly believe in the product and love it's capabilities.
Sure there maybe some things people wish for that aren't possible in earlier versions etc.
But for a very fairly priced ECU it sure is loaded with some very impressive features.
There are also many ways to control devices under certain operating conditions etc.
So by getting involved and helping those out seeking help, I in return learn as well.
No one has ever done everything.
So having a go at everything that crosses your path will expand your knowledge base 10 fold.
So in the process of helping you, at times I am learning also.
That is what this FORUM is about, NO BULL$%@T, just cold hard facts and many suggestions to help you all in the long run.
Regards
Dave.

You can only download one log file, but are you aware of the option to overlay a previous log against the one you're looking at? You can then align them as needed so you could look at both engines at once.

You open your first log, then open the 2nd. 
Then go to log file manager and put a tick in the box of the first log. 
Then it will show both. You can hold down mouse button on the time scale at the bottom to align the logs.

Then you could align the "splits" from when engines get turned off/on in order to check the results from each race. 


 

Hey people, 
Just thought I'd post up a quick note about something I did recently that worked out well.

I was wanting to optimise ignition timing for cruise, so using some switches on my dash to trigger a combination of datalogging, 4D ignition, 5D ignition and the 2nd ignition table set to overlay mode.

With the idea that I could add or remove timing from the main table in varying amounts without having to stop the car, and datalog the whole lot easily.

Like so: 



Since you can turn on more than one ignition trim table at once, using those three you can get a combination of timing settings which I then marked on the switches. 

So +1 degree, + 3 degrees, +5 degrees, etc. 
I completed a run on a particular stretch of motorway that has lots of ups and downs, with cruise control turned on at a speed that's at 3250rpm in 6th gear.
Then flicked the first switch, did it again.
Flicked second switch, did it again, and so on. 

When home looking through the data, bringing up a time plot with instant fuel consumption and throttle angle it was very easy to see which timing gave best economy. 


However a secondary method of checking fuel consumption overall is to create a "statistics" page and bring up wheel speed and instant fuel consumption, and look at the mean values:


Then from here I've made a quick excel sheet that converts it to Litres per 100km:



Then from here, collated the results from each run.


So based on this it's pretty clear that an additional 9 deg advance made the engine pretty happy on those particular cells, so updated my ignition table and readjusted some of the surrounding cells to more sensible values too.

It was a fairly time consuming exercise but it's amazing to see how much fuel I have been throwing down the toilet just based on under advanced ignition. 
It was also interesting to see that at 100kpa my car only has 14 deg ignition at that rpm, but then by 70kpa it's wanting 33. (The goal AFR changes though, to be fair... 15.2:1 goal AFR for cruising)

Since changing the timing the car is a lot quieter too! 
I am guessing because when you dont have enough timing, the flame front is still expanding when the exhaust valves open. So instead of having energy push the piston down, it's coming out the exhaust as noise and heat. 

Hey there, 
I ran some tests on a VVTI motor by connecting up a MAF sensor, and then datalogging the output at varying cam advance angles. As per below. 
So it should be fairly easy to see where it's adding airflow (power potential!) without a dyno by looking where you need to add/remove fuel to reach goal AFRs at differening cam angles.

(Then head to dyno to optimise ignition timing etc) 

 

Good morning everybody,
Last night we released a new PCLink and Firmware, I updated this thread but it didn't stick (weird eh?)
Thanks for your patience with the 5.6.2 to 5.6.5 update-requiring-ECU unlock bug. Thanks Davidv for his work around.
 
I'll leave these notes attached because they're still quite relevant to this release:
As always, here's how to update your firmware the best way:

Thanks, I'm aware of this issue, it is marked as high priority and I've been working on a solution.

I will ask the engineers if they can add this to the Options > Colour Theme . This way you can choose the colour you would like to use.
Scott.

Hi Dan,
I've referred this on to the engineers, here is what they had to say:
The "Air per cylinder measured" parameter is a value only from a MAF input.
The "Air per cylinder Estimated" parameter is calculated from the MAP sensor. 
The engineers are happy to add "Air per cylinder Estimated" to the table axis options and will put it on the list.
Scott

Hi,
I did this schematic diagram for a friend of mine who wants to run dual fuel pumps in a staged fashion.
I just thought I would share the schematics for anyone who is interested.
I know, I know, I forgot to add fuses.
Regards
Dave

I'd like to add my vote for the addition of optional 2D graphs as well...  I like switching between 3D and 2D in other platforms to quickly find areas that need a little more attention or being able to identify trends to speed up mapping certain areas, as well as just another data point for finding bottle necks in setups.