follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
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 04-27-2018, 06:56 PM   #1
ryankay
Junior Member
 
Join Date: Dec 2013
Drives: 2014 Subaru BRZ
Location: Columbus
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
OFT-MAF scaling for K&N typhoon intake

Has anyone scaled their MAF for this intake? Tuning with OFT and fuel trims are a little off. If anyone has the scaling they used that would be awesome! I’m going to work on datalogging to get it right, but I’m a newbie so it’s going to take a while to tackle the learning curve.
Already using Steve99’s post as a guide, just trying to shortcut if someone else already did it.
http://www.ft86club.com/forums/showthread.php?t=64790

Seems like it really only has an issue during idle 20%ltft.....I’ve had this intake on for years, only just started logging etc....is this an issue or am I just making fuss?
I read somewhere that the MAF being so close to the throttle body causes turbulence issues

Last edited by ryankay; 04-28-2018 at 02:23 AM. Reason: Linking to other post. Clarification.
ryankay is offline   Reply With Quote
Old 04-29-2018, 10:12 PM   #2
coxxoc
Member
 
Join Date: Dec 2015
Drives: BRZ
Location: Bentonville, AR
Posts: 46
Thanks: 5
Thanked 15 Times in 11 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Your high idle LTFT sounds more like an intake or exhaust leak more than anything. Is the LTFT closer to ideal once you are in higher load cells?

You are starting in a good place with Steve99's MAF scaling guide. Wayno also has some summarized info on http://www.wayneroms.com/ in the fuel tuning section.
coxxoc is offline   Reply With Quote
Old 04-30-2018, 01:36 AM   #3
ryankay
Junior Member
 
Join Date: Dec 2013
Drives: 2014 Subaru BRZ
Location: Columbus
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Cruising, in town, aggressive WOT all decent ST/LT fuel trims. Generally within 5% rarely 10% letting off throttle in gear goes high trims similar to idle.
Haven’t noticed any Exhaust leaks
Previously had an issue with leak on crankcase vent hose to intake (the fitting is npt to hose barb and it’s plastic) but not sure if that’s causing my issue or not :p

After multiple logs, the MAF scale really isn’t off by much(if at all) to even bother with it for now. I’ll see if I can’t find a good aluminum replacement for that crankcase vent hose and try it out.
ryankay is offline   Reply With Quote
Old 04-30-2018, 06:01 AM   #4
Vin
Senior Member
 
Vin's Avatar
 
Join Date: Aug 2016
Drives: 2012 GT86 EU-spec
Location: The Netherlands
Posts: 204
Thanks: 232
Thanked 149 Times in 99 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Overrun = same trims as idle, it corrects on idle and applies on overrun. However during overrun injectors shut of anyway so its purely cosmetic. Sounds like a maf scaling issue to me. Make a log with some third gear pulls and closed loop driving and share it with datazap.me. Trims only tell part of the story. How afr compares to commanded afr tells a lot too.
__________________

Last edited by Vin; 04-30-2018 at 06:20 AM.
Vin is offline   Reply With Quote
Old 08-30-2021, 12:25 AM   #5
Collin Long
Junior Member
 
Collin Long's Avatar
 
Join Date: Aug 2021
Drives: 2013 Scion FRS
Location: Kentucky
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
I have the same intake and I get my LTFT's around -14 with STFT around .75 at idle, also getting some knock correction and flkc, I need some help with scaling this thing too
Collin Long is offline   Reply With Quote
 
Reply

Tags
intake, k&n, maf, oft, scale

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
K&N Typhoon Cold Air Intake sh1nd0kun Engine, Exhaust, Bolt-Ons 5 09-15-2017 12:39 PM
K&N Typhoon 69 Air Intake doctor_driver Engine, Exhaust, Bolt-Ons 1 02-22-2017 02:24 PM
FS K&N 69 Typhoon Air Intake dejahboi Engine, Exhaust, Bolt-Ons 3 02-04-2017 02:37 PM
K&N Typhoon Intake els7x5 Engine, Exhaust, Bolt-Ons 3 09-29-2016 10:29 PM
fs/ft: k&n typhoon intake Hmongfrs Engine, Exhaust, Bolt-Ons 2 11-19-2014 06:10 PM


All times are GMT -4. The time now is 12:46 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.