Welcome to the North American Subaru Impreza Owners Club Tuesday December 18, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning > Open Source Reflashes

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 06-20-2018, 03:20 AM   #1
Nettalp
Scooby Specialist
 
Member#: 93812
Join Date: Aug 2005
Chapter/Region: SCIC
Location: Huntington Beach,CA
Vehicle:
2004 Wrx wagon
Platinum Silver Metallic

Default Boost and Fuel Questions

Hi everyone,

Looking for feedback and overall consensus here:

1) What is a normal tolerance for Boost levels to drop in hot weather vs cold weather? Looking for sea level comparison. Cold weather / target boost = 17lbs. Warmer hot weather consistent 16.2lbs and sometimes 15.8lbs.

2) What are normal STFT numbers for stage 2 tunes? Ive been seeing STFT -20's all the way to + 15 or 18. My LTFT are -1 to +3% and within the acceptable +/- 4-5% ranges.

Car: 2004 USDM wax wagon MT
Fuel: CA 91 Octane (Socal)
Elevation: 39 ft (Sealevel)
Cold Weather: Currently 55-65 degrees
Hot Weather: Currently 70-85 degrees

Mods:
TD04 Turbo (Stock)
Gutted STI Downpipe
Sti Catless Uppipe
Oem Header (Port and Polished)
Greddy 3 inch exhaust
Grimmspeed EBCS
Walbro 255 Fuel Pump
Stock Intake
Stock Injectors
Stock Intercooler
* Registered users of the site do not see these ads.
Nettalp is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 06-20-2018, 12:30 PM   #2
86Dreams
Scooby Specialist
 
Member#: 385256
Join Date: Mar 2014
Chapter/Region: Tri-State
Location: Harriman NY
Vehicle:
V7 S204

Default

Neither are straight forward questions and depend on weather, tuning, and operating state.
86Dreams is offline   Reply With Quote
Old 07-09-2018, 06:49 PM   #3
TickerPyro
Scooby Newbie
 
Member#: 488141
Join Date: Jul 2018
Default

You can set adjustments for weather so your boost stays the same, or at least very close.

And as far as STFT you might refer to the COBB Stage 2 Setup. I am guessing that is what you mean by "normal". Lots of people are on complete stock fuel setups still running Stg 2, so what is normal for them really wouldn't be normal for a FP upgrade and injectors.
TickerPyro is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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

All times are GMT -4. The time now is 06:36 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.