EFIDynoTuning Forum

Have an issue in the tune.

Preparing to run a VMP HPX maf .

In the tune file im on RZASA 190312

It will not accept Kg/hr numbers larger than what its forcing a value of 1745.4 Why is this and what can i do to eliminate this problem in the file to properly match the MAF sensor being used ? I can type the values in , save them , but revisiting it changes those values and pegs them at that.

your xdf is 2 years old.

download the latest it uses the k constant so no worries.

Will do. I think i tried that one before and ran into the same issue which is why i reverted originally. Does the K constant allow me to place the true values from the maf table ?

You were clipping the max limit in the maf. If you have larger injectors that value will be higher with the k constant.

Read the fuel write up.

Thanks i just saw that it was updated.

I am running 52lb ford racing injectors @60psi

So i updated the XDF and changed the K constant to 30 .

I edited MAF data , sar, high and low slopes.

The maf is the only one that seems to scale down with a max and the scale percentage is around 1.9%

so from there I can dial in the tune or is there another step i must take ?

you have to do the injector data first

maf will be acrual values now, there is no visible scaling with the k constant

nah thats it

you did update all the sp** parameters correct

All SP parameters appear to be updated. for maf-t does the sp** maf-t and the non SP need to be updated ? i only updated the non SP for that

The kg/hr table clips maf value at a max of 3320.2 now.
All values lower appear to properly reflect the table from this default transfer.

https://drive.google.com/file/d/1Kksy4U ... pDYAT/view

the sp** maf transfer is what you need. The comments should tell you that.

that limit sounds correct for your injectors.

cool deal. I've updated that one also now.
When dialing in fuel i should update SP** maf transfer only or both ?