Welcome to the North American Subaru Impreza Owners Club Wednesday December 2, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning

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.

* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 03-13-2020, 04:28 AM   #351
Scooby Newbie
Member#: 512536
Join Date: Mar 2020
Default Awesome!!

Honestly this is genius.
* Registered users of the site do not see these ads.
Jinniman is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-16-2020, 07:54 AM   #352
Scooby Newbie
Member#: 513773
Join Date: Apr 2020
Location: Melbourne, Australia
2004 Club Spec Evo 7
WR Blue


Thank you
edlamx is offline   Reply With Quote
Old 08-16-2020, 02:37 PM   #353
Scooby Newbie
Member#: 516674
Join Date: Jul 2020
Default Iam 16

in wrx 02 16bit ecu I tune for vf34 with 775cc fic injectors .all ok but I have an question for advance .In logs U see the total ign adv at 6000Rom is 36 degree.The base map is 26 degree and the correction advance map is 10 degree .Is this correct ? I run 21psi

Originally Posted by Vishnu Performance View Post
Just a little trick that has been shown to accelerate the factory ECU's ignition timing learning process.

Background: There is something called "Ignition Advance Multiplier". It represents, by some complicated algorithm, the average learned positive knock correction applied to the ignition maps. It's represented in 1/8th degrees increments. 1 being the lowest and 16 being the highest (1/8 to 2 degrees in absolute terms).

The "happier" (knock free) the car is, the higher the number will be. Conversely, the lower it is, the more knock prone it is. This number, after ECU reset ore ECU swap defaults to 8 and usually creeps up to 16 (if well mapped) through normal driving. Depending on driving characteristics, this can happen within a few hours or a few weeks. Well, here's a way to make it happen in about 5 seconds ....

First: With the car fully warmed up, reset the ECU. This can be done by killing power the ECU or by simply pulling off the neg. battery terminal and pressing the brake pedal for a couple of seconds.

Second: Drive to a nice open road without traffic. Don't go on boost until you get there. Put the car into gear (3rd gear works the best) bring the revs up to 2600rpm. Push the go pedal down slightly so boost stays right around 2-4psi. You will need to MAINTAIN 2500rpm and 2-5psi for approx 5 seconds. You can do this by left-foot braking gently as to prevent acceleration. During these few seconds, the advance multiplier (which you can't see so you'll have to trust me) will go from 8, to 12 and then to 16. Works like a charm. And on our reflashed ECU, is worth an immediate 10-20 horsepower

In an attempt to save a lot of dyno time between reflashes (when the advance multiplier resets itself), I do this little trick after every reflash. In a typical dyno session, it's not unusual to reflash the same car up to 5 times. On the dyno, all I need to do is tell the dyno to hold revs to 2600rpm. Then I just lay on the throttle until I see a few psi of boost... Bingo!

Warning: This little trick artificially speeds up the learning process. This is only a good thing if the re-mapped ECU is mapped properly. If there are trouble-spots where knock is present, this trick will make it even more present. So be careful!

chiptuner1 is offline   Reply With Quote

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
re-mapped ecu tiger20002 Subaru Conversions 2 09-03-2014 12:36 PM
Zero to 100% operational in .5 seconds Strider Off-Topic 31 02-01-2008 05:10 PM
Fuel Vapor Technologies Car = 92 mpg and 0-60 in 5 seconds hampster Non-Subaru News & Rumors 11 07-19-2007 01:15 PM
0-60 in 5 seconds, Confirm please? kahtep Proven Power Bragging 11 07-17-2006 02:55 PM
10-100mph in 7 seconds! BlownCobra Off-Topic 39 12-03-2003 01:02 AM

All times are GMT -4. The time now is 03:16 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.