RomRaider

Did you leave the MAF range at 20-100? I wasnt able to see any data points when I left it there. Am I missing something?

STI shortblock with stock WRX heads
Stock airbox, stock MAF inlet, TD04. MRT TMIC for my intake.
Subaru blue 565cc injectors
Walbro 255 Fuel pump
Ported stock headers with stock O2 sensor.

-Dave

No I had to play with my ranges a lot... remember that IAT and Coolant temp ranges are displayed in Celsius so you need to monitor where your temps are at but make sure you are reading them in C. My IAT's were as low as 5* C last night so I had to lower that filter a lot. I also moved my RPM and MAF lower ranges down to 0 but I only logged when I was cruising on the highway.
You've got to take the time to check each filter to make sure you're within range... it caught me at first too but once I had that figured out I was fine.

And actually a question... using the injector tab... what is the proper way to log? Do you do cruising on the highway only with no sudden throttle movements? Do you also log idle? Maybe idle only?
I did cruising on the highway only... when I also logged idle it would throw off the results so I just skipped it... but what is the proper way to go about this, maybe I'm way off here.

I tended to log everything. The tab logic cuts out open loop data. I suppose the best thing is to log constant load for a long period of time.

BTW, I got my undergrad at CU Boulder, graduated 2003.

I know I haven't gathered enough data in this example, but assuming this scatterplot holds true... Does the fact that i get spread up top, mean my latency is off?

No. Usually, that means your MAF is off.

That makes more sense. Thanks man.

So as far as MAF scaling goes. This will only scale the bottom end right? I'll still need to use airboy's spreadsheet and some WOT pulls (with my WBO2) to scale the top end?

What should I aim for on the MAF tab? Horizontal line centered around 0, with minimal scatter?

Did my injector scaling today and I have a quick question.

I have STI pinks but my stock rom has flow scaling as 552.47. I know that the pinks are rated at 565's so why would the stock rom have such a lower value?

After doing the interpolation i got closer to 561.87. Should I use this value instead?

I know my MAF is pretty much dialed in..

Large version
http://img145.imageshack.us/img145/3563/injectorjs3.gif

2% is within the error range and could be caused by many many things. I wouldn't change it. Just scale your MAF in OL with a WBO2. It'll account for any differences in scalar.

If your AFR Learning D is -2%, you can change it, but you would still need to scale your MAF in OL.

this was about a half hour of highway driving tonight... some shifting in there, a little higher rpm 4th and 5th, but mostly 6th gear. i wanted to get some more logging in but i'm beat so i'll get some more tomorrow... anything differently i should be doing?
07 STi... stock intake, stock maf scaling, DW 750cc injectors scaled to 743cc and .85 latency at 14v.
i'm trying to adjust injector scaling right now before i go back to aftermarket intake... looks like idle is adding 10-12% fuel but cruising isnt off by that much... would that be an indication that i need to increase latency? not positive...
and sorry if this is off topic, just seemed similar to how things have been going lately.

I'm assuming this reply was to me?

I logged a bit more, and tried applying suggested MAF changes, then went back out and logged some more. It looks like the spread on the top of my injector graph got pulled in quite a bit. I forgot to take a screenshot, but it looks quite a bit better now. I'll do a few more cycles of logging/tweaking on my daily commutes, and I think i'll be able to get it dialed in quite nicely.

Kascade: thanks SO much for this new feature set. It really makes scaling MAF/Injectors so much simpler for us beginners.

Did you use the Injector tool to graph data at the same time? If so based on what I remember of mickey's spreadsheet (it's been a while...), if your MAF values are high but horizontal, you would want to increase your injector scalar a bit (by the % that you are high?). Maybe try increasing your scalar by +2.5-3%, as that would bring your best fit line down around 0 for the flatest part.

As for the low end of your MAF, it likely needs to be scaled, but you probably want to drive around town at some lower MAF g/s to gather some more low end data first...

This is based on my understanding of the graphs, you may want to wait for someone else to chime in...

Sorry, I was talking to Spec-C about his 550 vs 560.

hmm should i just start logging and drive... not worry about shifting, coasting, local driving with accellerating and different throttle positions, etc? i am usually mindful to only use this on the highway with constant throttle position but you're right i dont have much low end logged...
i forgot to also log injectors but i'll do that today and try to get another solid log... gotta just go drive into nowhere since i've got nowhere to go, haha.

+1...w00t...