RomRaider

Also, make sure that RomRaider isn't connected to the ECU when you hit the 'update' button in Learning View.

merchgod, do you have any plans on updating the new ECU defs for this utility tool from the latest defs release? (btw, huge thanks on that one, I can now fully work with my rom! )

Yes, although I'm going to work on the RomRaider/Ecuflash CANbus update first, then work on getting Learning View working with the openport 2.0 and add the newest defs, so it might be a little while.

hi there.. just hooked up LV and this is what i got (attached below)

Note: I'm running a 70mm CAI MAF intake. Also, it's been a about 10 days/2 tanks full of fuel since my last ecu reflash/reset. Also, we've reduce the 'Tip-in enrichment' table in the ECU by -32 points across - which seems to give better throt response at the low end.

Seems that i'm off quite a bit at AFL B range by -10%. So i'm guessing i have to basically reduce MAF g/s there and anywhere that shows a negative value until i get to about +/-5% across, right?

We've bumped up the AFL D range scale from 50 to 75 MAF g/s so that CL corrections does not impact OL when it transits over - is this fine?

Also does this mean that once i get within +/-5%, my CL/OL MAF is sorted and i can leave it alone or do i still need to run checks with the MAF tab in the logger? Once this is sorted i plan to go with bigger injectors/turbo upgrade. Just wanted to get things sorted before then.

Thanks.

yeah i was wondering about that afl range area

i didn't know what to do and i am also in the -10 area on the first one
either that or i was about -5 something
but i will check later and come back to see if anyone has answered
and i don't know the diameter of the SPT intake

maybe too complicated... really, ust wanted to know...

1. if it's a '-ve' value that shows up in the AFL table - does that mean we need to reduce MAF g/s in the corresponding range or do we increase?

2. Once AFL ranges are within -/+5% - does that mean that both CL and OL MAF scaling is good enough and no real need to tune either further? and does that mean i can now move onto bigger injectors/turbos plans?

thanks..

that's what i want to know

the a/f learning #1 values are the percentage change in fuel. So, if it is negative, then the ECU is pulling fuel because it is too rich, and if it is positive then it is adding fuel because it is too lean. This is based on patterns of the difference between your CL fueling target and the reading of the a/f sensor #1 (i.e. front). If you were modifying the maf scaling to correct an issue (and this wouldn't necessarily be the correct path - could be an issue with latency or your injector constant), and the a/f learning #1 was negative, then you would want to decrease the relevant airflow values and if it was positive, then you would want to increase the airflow values.

Thanks merchgod for the response and explanation. Understand the possibility of injector latency or constant as the issue other than MAF g/s.

I currently run a Big MAF CAI setup with stock injectors.. so i would assume correcting the MAF g/s in this instance would be the appropriate approach and unless i change my stock to aftermarket injectors that i would have to adjust my injectors latency and flow rates right? No?

Also, from theory wise - if from Learning View Tool, AFL ranges are all within acceptable levels (i.e. +/-5%) and also that my Target vs Actual AFRs are within 0.1 from WOT pull to redline, which i think is acceptable as well - does that mean that my CL and OL MAF are pretty much sorted?

And theory wise again, does that mean i now have a good base to move up to bigger injectors and refine from there?

Sorry for the load of questions - just wanted to be specific with my intentions.. Thanks.

Yes, you most certainly want to tune the maf scaling table with a big MAF. With stock injectors, you shouldn't have to modify latency or the injector constant except you may would need to modify the injector constant if you are running e85.

You may want to check out Kascade's maf tool in the logger.

yes i did check out the MAF tab/tool in the latest logger. did run it for a bit but don't really know how to use it effectively. Is there a guide or tutorial somewhere? conversely, i've also read mickeyd2005's post on scaling the MAF using his spreadsheet but seems a little too complex to me to use.

search for guide by "dweeb" posted somewhere on our site.

ok will do. tks.

Hi all scooby drivers. That's my WRX'01 table. My mods: uppipe, downpipe, full exhaust system 3" by Kakumei. Fuel: 95 oktane. All ok, or need ECU correction? Thanx for u answers.

This is from about 300 miles of highway driving yesterday. Found I had a way huge maf mess up at 3.8v fixed it took some fuel away from low rpms and higher loads as I was getting a bit of fine learning and it cleared it up..!?

Heres my question I was seeing 3-4% values in a-c, I went looking for a reason and found my injectors were scaled at 418 not 420.23 (stock value) this reduced my values to current. Why would making my injectors "bigger" add fuel!? Shouldn't this take me further positive? Oh well I guess it worked. IAM has not dropped below 16 for about 3 months now.... BTW, it was flashed with the updated map prior to the drive.



Jerod