MAF Scaling - Open/Closed Loop Fueling info - Page 41 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

allowe · 03-05-2017, 12:36 PM

Does anyone know if you need to scale injen intakes?

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oldgunfan · 03-05-2017, 01:27 PM

Quote:

Originally Posted by Tor

That log is the stock A00G tune at 34 degs C, with 30.000 km of learning.

I'm sorry for the confusion, I included it to ask the following question:

So that log can be disregarded. Come to think of it, it could be entirely worthless as it is logged with the logfile.txt for A01G tune (I assumed it was A01G when I did the logs).

Otherwise, I am NA, completely stock except drop-in K&N air filter. I log and flash with Tactrix.

The actual current log is this one:
http://datazap.me/u/tor/tor-104-pull...5&zoom=550-688

Thanks for all the other information you provided.

I wonder If on his PI-DI scale if it's shutting off PI at 5000. Most of the tunes I have looked at that's usually to just DI.

solidONE · 03-05-2017, 04:18 PM

Quote:

Originally Posted by allowe

Does anyone know if you need to scale injen intakes?

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Yes. anything that does not use the factory MAF housing/airbox will require a rescale. Unless you dont mind it running like crap. Do enough lurking on threads about intakes and that injen will find it's next home in a trash bin.

Tor · 03-05-2017, 07:17 PM

Quote:

Originally Posted by oldgunfan

I wonder If on his PI-DI scale if it's shutting off PI at 5000. Most of the tunes I have looked at that's usually to just DI.

It was. But this log is from a tune that is literally 30+ flashes ago.

aagun · 03-05-2017, 11:54 PM

Quote:

Originally Posted by solidONE

Yes. anything that does not use the factory MAF housing/airbox will require a rescale. Unless you dont mind it running like crap. Do enough lurking on threads about intakes and that injen will find it's next home in a trash bin.

drop in filter need rescale at top end but not necessary

solidONE · 03-06-2017, 01:54 AM

Quote:

Originally Posted by aagun

drop in filter need rescale at top end but not necessary

One can argue that a completely OE intake could benefit from a MAF rescale and they would be 100% correct.

allowe · 03-06-2017, 10:41 AM

I'm legit about to buy oe intake from someone. My car came with an injen intake but I have yet to hear 1 person say "oh it's better" does it give any power at all over a drop in filter?....

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aagun · 03-06-2017, 02:21 PM

Quote:

Originally Posted by solidONE

One can argue that a completely OE intake could benefit from a MAF rescale and they would be 100% correct.

proved

solidONE · 03-07-2017, 06:58 PM

Quote:

Originally Posted by allowe

I'm legit about to buy oe intake from someone. My car came with an injen intake but I have yet to hear 1 person say "oh it's better" does it give any power at all over a drop in filter?....

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If you dont already have the OE hardware, and that Injen intake is not giving you issues then I don't see the harm. Though many people have had problems with this particular intake in the past, while testers have seen good results. such as in this magazine article : http://dsportmag.com/the-tech/scion-...esting-ecutek/

I'm sure if you decide to go with a stock intake and drop-in you can recoup some money selling the injen or trading it.

neilvosko · 03-12-2017, 01:15 PM

Hi Everyone, great post with lots of info, i was made the basic OTS guide adjustments from @Wayno's post and this post from @steve99 but no matter what i do, i am loggin 0 V on MAF voltage and my advance multiplier is always 0 and FLCK is -5 constant.

http://www.datazap.me/u/neilvosko/lo...&zoom=875-1240

i must be missing something, please help.

much appreciated.

steve99 · 03-12-2017, 07:44 PM

Quote:

Originally Posted by neilvosko

Hi Everyone, great post with lots of info, i was made the basic OTS guide adjustments from @Wayno's post and this post from @steve99 but no matter what i do, i am loggin 0 V on MAF voltage and my advance multiplier is always 0 and FLCK is -5 constant.

http://www.datazap.me/u/neilvosko/lo...&zoom=875-1240

i must be missing something, please help.

much appreciated.

Its a logging error with oft on leter rom calid

either ask oft guys to fix it ot you will need to get a calid hacked tune file so you can run the older B01x roms in your car with oft that will log correctly.

the tune will be ok its just a logging error

you could use KC Learned to confirm the absence of knock it ususlly works on leter roms

neilvosko · 03-12-2017, 09:44 PM

thanks @steve99

do these logs require MAF scaling? or leave as is?
tough for me since i am not able to log MAF voltage.

http://www.datazap.me/u/neilvosko/lo...zoom=1472-1543

http://www.datazap.me/u/neilvosko/lo...1&zoom=517-609

thanks,
Neil

Quote:

Originally Posted by steve99

Its a logging error with oft on leter rom calid

either ask oft guys to fix it ot you will need to get a calid hacked tune file so you can run the older B01x roms in your car with oft that will log correctly.

the tune will be ok its just a logging error

you could use KC Learned to confirm the absence of knock it ususlly works on leter roms

steve99 · 03-13-2017, 09:06 PM

Quote:

Originally Posted by neilvosko

thanks @steve99

do these logs require MAF scaling? or leave as is?
tough for me since i am not able to log MAF voltage.

http://www.datazap.me/u/neilvosko/lo...zoom=1472-1543

http://www.datazap.me/u/neilvosko/lo...1&zoom=517-609

thanks,
Neil

looks pretty good , slightly rich over 6000 rpm so if you take 4% off the current maf flow numbers over 120 g\s it should fix it, but not rearly that bad

Spuds · 04-27-2017, 11:10 PM

Hey folks. Followed the instructions in the first post to scale my MAF as I was seeing LTFT of +5 to +10. The vgi scaling program worked great for closed loop. Though it resulted in a slightly bumpy scale, my LTFT was down to +-3%.

Open loop scaling, on the other hand was quite wavy, and the transition showed the 3V lump folks were talking about back on page 8 of this thread. I cant seem to follow the logic/conversation and stopped trying a few pages in, but it seemed like it involved having to first get the injectors set correctly?

I know it was discussed in a number of threads back in 2014-ish, but if anyone could explain the consensus reached about why this happens and if I should/how I can get the scaling on the upper end right, I would very much appreciate it.

Just FYI: Stock engine, OFT, and Perrin inlet tube (because sound generator was annoying) in case that matters.

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03-05-2017, 12:36 PM	#561
allowe Senior Member Join Date: Sep 2016 Drives: FR-S Location: mississauga Posts: 576 Thanks: 227 Thanked 122 Times in 89 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Does anyone know if you need to scale injen intakes? Sent from my iPhone using Tapatalk

03-06-2017, 10:41 AM	#567
allowe Senior Member Join Date: Sep 2016 Drives: FR-S Location: mississauga Posts: 576 Thanks: 227 Thanked 122 Times in 89 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	I'm legit about to buy oe intake from someone. My car came with an injen intake but I have yet to hear 1 person say "oh it's better" does it give any power at all over a drop in filter?.... Sent from my iPhone using Tapatalk

03-12-2017, 01:15 PM	#570
neilvosko Senior Member Join Date: Oct 2016 Drives: Hyper Blue BRZ Location: Miami, FL Posts: 270 Thanks: 35 Thanked 13 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hi Everyone, great post with lots of info, i was made the basic OTS guide adjustments from @Wayno's post and this post from @steve99 but no matter what i do, i am loggin 0 V on MAF voltage and my advance multiplier is always 0 and FLCK is -5 constant. http://www.datazap.me/u/neilvosko/lo...&zoom=875-1240 i must be missing something, please help. much appreciated.

04-27-2017, 11:10 PM	#574
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,658 Thanks: 26,709 Thanked 12,715 Times in 6,298 Posts Mentioned: 88 Post(s) Tagged: 0 Thread(s)	Hey folks. Followed the instructions in the first post to scale my MAF as I was seeing LTFT of +5 to +10. The vgi scaling program worked great for closed loop. Though it resulted in a slightly bumpy scale, my LTFT was down to +-3%. Open loop scaling, on the other hand was quite wavy, and the transition showed the 3V lump folks were talking about back on page 8 of this thread. I cant seem to follow the logic/conversation and stopped trying a few pages in, but it seemed like it involved having to first get the injectors set correctly? I know it was discussed in a number of threads back in 2014-ish, but if anyone could explain the consensus reached about why this happens and if I should/how I can get the scaling on the upper end right, I would very much appreciate it. Just FYI: Stock engine, OFT, and Perrin inlet tube (because sound generator was annoying) in case that matters.

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