Progressive WMI (JB4)

[xot1]

Has anyone tried to use it?
If so let us share our settings. What nozzle size and what PWM values are you using?
I haven't tried yet but I am very curious about this feature.
It was added in the v9 firmware but I couldn't find anyone ever mentioning about it.

For those who don't know what it is, there is not a bunch of info online either but this thread explains how to use it:
User Adjustable PWM Meth Control - N54Tech.com - International Turbo Racing Discussion

 

[Terry@BMS]

It's useful to customize if you want less meth flow for some reason, like if the nozzles are too large or fuel trims dropping negative due to a flash map. But in most cases the default mapping is suggested.

 

[xot1]

One simple thing it would allow is to adjust the amount of meth without having to swap nozzles all the time.

There are other advantages I can think of but my understanding of how map8 works isn't good enough yet to say.

 

[Terry@BMS]

If you want less meth for example then yes that is the main purpose.

 

[xot1]

Less or more. I was thinking of maybe getting myself a BM14 and set a duty cycle of 35%/50%/70% for when I want to flow like a BM 5/7/10.

Map8 adjusts boost based on meth flow but only on/off right? or is it a linear scaling and lowering the duty cycle will affect the boost?

 

[STINGER]

I wouldn't go too big, you don't want to run into atomization issues due to low pressure.

 

[Terry@BMS]

The smaller nozzles atomize better than the larger ones, and reducing duty at the pump further hurts atomization. In most cases we suggest a single BM10 and the default settings. If there is a unique situation then there are unique solutions for them but most of time default is the way to go.

Map8 is a progressive map with boost mapped on flow, so it's not an "all or nothing" sort of thing. That allows it to merge well with meth flow changes.