follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Software Tuning

Software Tuning Discuss all software tuning topics.


User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-28-2022, 04:06 PM   #1
SeddyBRZ
Member
 
Join Date: Sep 2021
Drives: Pearl White 2014 BRZ
Location: Nebraska
Posts: 23
Thanks: 3
Thanked 11 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Tuning Questions

I've been reading up on tuning over the last few days. I am a total noob when it comes to this stuff but I really want to get into it as I have an OFT. I have been reading several posts about little adjustments and also a thread by steve99 and several others.

I have a few questions that I haven't seen the answer to or perhaps I missed it (I apologize if I have).
  • What throttle settings do I data log at?
  • what should AFR be at cruising and WOT?
  • How do I adjust AFR? Is it done through the closed loop fuel map and adjusting timing?
  • What does adding more timing do vs retarding timing?
  • If making minor adjustments, what are the typical values to follow (ex: 1.00, 0.50, 0.01)
  • What is knock correction and MAF scaling and how do they work?
  • Is AFR, timing, and overall everything done different if running e85?
I understand that some if not all of these questions have been talked about before but if I could be pointed in the right direction for the harder to answer questions that would be great. I just want to dial in my OFT tune to work with my UEL and Intake. Keep in mind I am editing the stg2 e85 v4 tune off their website.
SeddyBRZ is offline   Reply With Quote
Old 04-28-2022, 08:27 PM   #2
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 1,865
Thanks: 431
Thanked 824 Times in 617 Posts
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
you literally won t be able to tune yourself if you can t answer by yourself to any of your questions, sorry

Better to ask help directly by let the tuner do the work

ots tunes are already a good start to understand what it is usually modified
the rest is mostly basic knowledge about engine management, if you have no clue what maf scaling is for or what fuel trims are, even after reading all steve' stuff that already explain most of the stuff.. i don t think it s a good idea to tune yourself for now
tomm.brz is offline   Reply With Quote
The Following 3 Users Say Thank You to tomm.brz For This Useful Post:
Teseo (05-02-2022), Ultramaroon (05-02-2022), x808drifter (04-29-2022)
Old 04-29-2022, 02:23 AM   #3
SeddyBRZ
Member
 
Join Date: Sep 2021
Drives: Pearl White 2014 BRZ
Location: Nebraska
Posts: 23
Thanks: 3
Thanked 11 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by tomm.brz View Post
you literally won t be able to tune yourself if you can t answer by yourself to any of your questions, sorry

Better to ask help directly by let the tuner do the work

ots tunes are already a good start to understand what it is usually modified
the rest is mostly basic knowledge about engine management, if you have no clue what maf scaling is for or what fuel trims are, even after reading all steve' stuff that already explain most of the stuff.. i don t think it s a good idea to tune yourself for now
its almost like I should make a form post asking the community to help steer me in the right direction to learn so I can get to that point or maybe ask a few questions with things I am struggling to understand.

I also never claimed to have read all of steves posts nor did I say I didn't know what fuel trims are. I was asking general questions that I have not seen on here and want to better understand the correlation between two different parameters and what changing one does to the other.
SeddyBRZ is offline   Reply With Quote
Old 04-29-2022, 05:41 AM   #4
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 1,865
Thanks: 431
Thanked 824 Times in 617 Posts
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Well by the specific questions you asked, it seems obvious you have no idea how modern engine management works, sorry.. So if you want a starting point, buy online courses. https://www.hpacademy.com/courses/

If you don t want to spend money to educate yourself on the topic, you either do some digging around to at least learn the very basics (which afr is desiderable, how maf sensor works to set the afr, how knock management works, etc) and then you come with more focused and less generic questions, or at this point is like asking for spoonfeeding but the topic is quite big so good luck in that

There are reasons tuners ask for >250 usd usually, one of that is they have spent monthes in learning and experience in modyifing tunes

Nasioc is a good source for how subaru ECM works, also the pdf about tuning our specific ecu available on ecutek website, also every post of steve99 in here
tomm.brz is offline   Reply With Quote
The Following 2 Users Say Thank You to tomm.brz For This Useful Post:
Ultramaroon (05-02-2022), x808drifter (04-29-2022)
Old 05-02-2022, 12:47 PM   #5
shr133
Senior Member
 
shr133's Avatar
 
Join Date: Nov 2015
Drives: 2013 FRS
Location: WISCONSIN
Posts: 101
Thanks: 39
Thanked 25 Times in 21 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by SeddyBRZ View Post
I've been reading up on tuning over the last few days. I am a total noob when it comes to this stuff but I really want to get into it as I have an OFT. I have been reading several posts about little adjustments and also a thread by steve99 and several others.

I have a few questions that I haven't seen the answer to or perhaps I missed it (I apologize if I have).
  • What throttle settings do I data log at?
  • what should AFR be at cruising and WOT?
  • How do I adjust AFR? Is it done through the closed loop fuel map and adjusting timing?
  • What does adding more timing do vs retarding timing?
  • If making minor adjustments, what are the typical values to follow (ex: 1.00, 0.50, 0.01)
  • What is knock correction and MAF scaling and how do they work?
  • Is AFR, timing, and overall everything done different if running e85?
I understand that some if not all of these questions have been talked about before but if I could be pointed in the right direction for the harder to answer questions that would be great. I just want to dial in my OFT tune to work with my UEL and Intake. Keep in mind I am editing the stg2 e85 v4 tune off their website.
AFR should go from 14.5 for idle and cruising up to around 12 to 11.5 at wot. but that is something you tune for.. You would need to rescale the stock O2 sensor or have a wide band.
knock correction tells you that you have too much timing... run as much timing that doesn't produce knock correction or it makes less power , but has to be dialed in.

with fuel and timing adjust a few tenths .2 to .5 at a time, some things are limited by the ecu. maf 1% or 2 % at a time.

MAF is how you scale your intake sensor to make sure the computer knows how much air is going into the engine.. You have to do this before you can accurately adjust the fuel...

So a lot to learn, go slowly, make lots of notes, save and label all variation of the tune, save the base tune and keep learning, tons of information out there but don't change anything until you understand what you are changing.
__________________
Enkei TS9 18 X 8, Michelin Sport 4S 225 40 18, Flex Fuel, Edelbrock Supercharger, P & L header, Nameless front pipe, V1 cat back, Aluminum Driveshaft, pvc delete, med duck bill, KW V3, Whiteline 20 and 18 mm bars, Buddy Club and SPL control arms, Toe Arms, motor and trans mounts, Whiteline bushings, SHR stage II tune.
shr133 is offline   Reply With Quote
The Following User Says Thank You to shr133 For This Useful Post:
SeddyBRZ (05-03-2022)
Old 05-02-2022, 01:13 PM   #6
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 9,419
Thanks: 14,990
Thanked 13,834 Times in 6,165 Posts
Mentioned: 79 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by SeddyBRZ View Post
its almost like I should make a form post asking the community to help steer me in the right direction to learn so I can get to that point or maybe ask a few questions with things I am struggling to understand.

I also never claimed to have read all of steves posts nor did I say I didn't know what fuel trims are. I was asking general questions that I have not seen on here and want to better understand the correlation between two different parameters and what changing one does to the other.
If you want better answers, ask better questions.

If you haven't read Steve's threads in his sig, then do that first. Write down notes on what you don't understand, then try searching google. At that point I would imagine you should have an idea of what more detailed questions you will want to ask. What you are asking now are such broad subjects someone could write a dissertation on them and nobody here is going to do that if you haven't even bothered to read the basics which are laid out in Steve's sig.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is offline   Reply With Quote
The Following 4 Users Say Thank You to NoHaveMSG For This Useful Post:
DarkPira7e (05-02-2022), Teseo (05-02-2022), Ultramaroon (05-02-2022), x808drifter (05-03-2022)
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
OFT + turbo tuning questions. beepinheimer Software Tuning 4 03-15-2018 07:16 PM
Tuning Questions. phantasticity Engine, Exhaust, Transmission 4 07-04-2016 10:19 PM
Questions about tuning and emissions for FI GREATNEESSS Forced Induction 11 07-24-2015 10:54 PM
Tuning questions and help KonTheory Software Tuning 26 06-24-2014 05:16 AM
Questions about EcuTek tuning. marine6680 Software Tuning 15 08-19-2013 11:07 AM


All times are GMT -4. The time now is 03:15 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2023 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.