Scaling?

***cleatus12r*** · #1 Wed, April 28th, 2010, 11:11 AM

Ok Dave,

Here's what I am going to guess.
Your tuner decided that for some reason, any ICP commanded after 44 MFD was to continue to use the highest values....essentially causing the PCM to run the same ICP at 100 MFD as it does at 44 based on any RPM.

I could see scaling the MFD axis on the ICP map to something higher (like 80 or 100 MFD instead of the stock 70) for better resolution and control, but not lower. Bill has no idea why it was set up that way either.

Bill is actually looking at yours as I type this.

***907DAVE*** · #2 Wed, April 28th, 2010, 11:29 AM

Ok... so after 44 MFD the ICP will not raise anymore but instead stay the same all the way to 100?

Is this the same thing that happens with stock scaling(70mfd)?

***cleatus12r*** · #3 Wed, April 28th, 2010, 11:36 AM

Yes. But on a stock truck (or near-stock truck) it doesn't matter since the boost related fueling will only allow 70 MFD anyway.

***907DAVE*** · #4 Wed, April 28th, 2010, 12:40 PM

Interesting........Is this because of the Adder To PW Multiplier Map, or something else?

Did Bill find anything?

F-127 · #5 Wed, April 28th, 2010, 03:52 PM

Quote:

Originally Posted by cleatus12r

Your tuner decided that for some reason, any ICP commanded after 44 MFD was to continue to use the highest values....essentially causing the PCM to run the same ICP at 100 MFD as it does at 44 based on any RPM.

Not to steal Dave's thread, I had a been meaning to ask a question about that. Make sure to answer his questions first.
So anything "off the charts" is referenced the exact same as the edge of the map/graph? Is my interpretation right?

How about when you get a situation like this?

***cleatus12r*** · #6 Wed, April 28th, 2010, 06:46 PM

Dave,

Bill was just as confused as I was about why they'd want to do that. But then again, he brought up the graph of a few of the ICP maps and kind of made a funny face about them, too.

Thomas,

I have often wondered that myself with the stock MFD map as most of the maps are that way. I have always just rescaled the A/D counts so that 100 MFD occurs at 1023 (or 1000 in your case). I'll ask Bill tomorrow (since I hate bringing up work-related stuff after or before work hours) what he thinks about it.

***907DAVE*** · #7 Thu, April 29th, 2010, 02:03 PM

Hey next time you guys aren't doing over there

could we get a Normalizer cheat sheat.

Maybe just for the beginner level stuff.

soutthpaw · #8 Thu, April 29th, 2010, 03:36 PM

Quote:

Originally Posted by cleatus12r

Dave,

Bill was just as confused as I was about why they'd want to do that. But then again, he brought up the graph of a few of the ICP maps and kind of made a funny face about them, too.

Thomas,

I have often wondered that myself with the stock MFD map as most of the maps are that way. I have always just rescaled the A/D counts so that 100 MFD occurs at 1023 (or 1000 in your case). I'll ask Bill tomorrow (since I hate bringing up work-related stuff after or before work hours) what he thinks about it.

what exactly are "work hours" over there

6am to 3am the following day????

***cleatus12r*** · #9 Thu, April 29th, 2010, 05:44 PM

Surprisingly, you're pretty close, DJ.

Thomas, if you look in the parameters, the max MFD is only set to "80" anyway. It's all because of the stock 90 CC injectors.

F-127 · #10 Mon, May 3rd, 2010, 05:28 PM

Opps, my mistake, I also forgot to mention the files I was looking at, it was a DAC3/VOAA7P6(dad's pickup). Looking at those parameters the Max MFD is 100. Just seems to go against my thinking of one X input and one Y input with multiple Z values being a problem, I'm guessing the PCM has someway of picking, just don't know how. I'll likely just try setting the normalizer like normal before I re-burn that chip, maybe even have it both ways and see if there's a difference.

So out of my curiosity I checked the files for my pickup, MLE1, and that shows a Mass fuel minimum of 80 and a max of 100. Does the minimum come into play or not?