*Testing* Volumetric Efficiency Calculator

[RotuneAlex]

Hi everyone,
My names Alex and I own Rotune Performance. '
I've been a Versatuner Pro partner for just over 3 years now and specialise solely on the Mazda RX8 platform which is why I'm posting in here.

I'm finally hopping on the forums to lend a hand where I can. That brings me to a small project I've been working on:

I have developed a calculator that can assist in helping you recalculate your Volumetric Efficiency table. As we know we need to alter the VE table to fully take advantage of any engine porting work. I know a lot of the experienced tuners probably wont need something like this but after using this myself contained in a small Windows .Bat file, I've now uploaded it to my website should anyone wish to use it.

It will not tune your car for you, it purely handles the mathematical calculations to help make things go a bit easier / faster.

How to use it:
1. Go for a drive and record AFR in closed loop.
2. Input RPM x Load of the cell you want to recalculate.
Keep in mind: adding the RPM and Load values do not affect the calculations, they are purely there for reference and plotting in the optional .CSV
3. You can input the existing data (old VE) that's in your VE table of the related cell and then input the Actual and Desired AFR of that RPM x Load range in their respective boxes.
4. Click calculate. The new value will be displayed along with the change percentage. All calculations are added to a log that can then be exported as a .CSV

You can either use the calculator with Lambda or AFR and either decimal or percentage.

Please note: This tool is currently in testing. Please report any errors, feedback and comments.

If you would like to give the calculator a go visit: https://www.rotuneperformance.com/