Welcome to the North American Subaru Impreza Owners Club Monday October 20, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 01-23-2003, 12:54 AM   #1
nicktckhoo
Scooby Newbie
 
Member#: 5836
Join Date: Apr 2001
Location: Chicago, IL, USA
Vehicle:
2002 fake STi
silver and pink

Question Dyno tuning the UTEC and/or ems in general

Hi Guys,

I am bringing my car in for dynoing...4wd dyno. for my stage 3 UTEC setup

How should I start to tune?

I am calling TXS tomorrow but would like to soon you guys out first.

Here goes..

step 1: do a baseline run in 3rd gear to make sure that everything is ok with the engine...check HP, torque, boost, wideband A/F ratios and IDCs....

step2: assuming everything in step 1 is ok. start reducing fuel across fuel map (rpm range) by the smallest increments keeping the values constant across the MAF % readings. when knock is detected at any point in the rpm range start adding back fuel. My question is this way I am basically tuning for WOT and assuming that the fuel settings are safe for part throttle (>60% but <100%)condition. Don't we all drive at WOT?

Or do I do the above fuel reductions and keep an eye on A/F ratios...once it goes above 11, stop and add back fuel at that particular rpm? Better yet, monitor both simutaneously?

step3: start increasing timing across the rpm range evenly by 1 degree. no knock ...proceed by another degree. once knock is detected... note rpm where knock occurred??? Is that possible since I am flooring it?

Is my approach correct? I am assuming the shape of the fuel map and the timing map to be optimal and this may be a wrong assumption. If so How do I tune at specific rpm points? Wouldn't that require an inordinate amount of runs?

Cheers
Nick
* Registered users of the site do not see these ads.
nicktckhoo is offline   Reply With Quote
Old 01-23-2003, 11:07 AM   #2
02WRX_BLUE
Scooby Specialist
 
Member#: 13704
Join Date: Dec 2001
Location: Chester Springs, PA
Vehicle:
2006 EVO MR
Apex Silver

Default

I would do the same...

UTEC logs do not provide AFR data enough to tune.. So, I would check and adjust the FUEL map.. (But, you should have a specific boost curve in mine so that AFR will be consistant).

I would not run more than 16 PSI with the STOCK turbo. So, I would create FUEL map for 16 psi and another one for 18 PSI (for drag racing and stuff).

As you said, I would do TIMING next to see if you can advance a little with the help from TMIC...

After you are done! Can you send me a copy of map to my email address? : )

Thanks,

Dan from PA.
02WRX_BLUE is offline   Reply With Quote
Old 01-24-2003, 02:14 AM   #3
nicktckhoo
Scooby Newbie
 
Member#: 5836
Join Date: Apr 2001
Location: Chicago, IL, USA
Vehicle:
2002 fake STi
silver and pink

Default

sure thing Dan
nicktckhoo is offline   Reply With Quote
Old 01-24-2003, 11:58 PM   #4
crazyhorse
Scooby Guru
 
Member#: 19502
Join Date: Jun 2002
Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
2010 Impreza with no
scoop. =(

Default

Actually... when you get that mapped tuned stop by my website if you wouldn't mind and upload it. =) We've had quite a few people looking for a stage 3 map. Gluck to you. I'll be tuning my stage 2 + headers map tomorrow down in Atlanta on the dyno.

-Tim McKenzie
www.wrxhackers.com
crazyhorse 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Who wants to get tuned the 20 and/or 21 renosubby Bay Area Impreza Club Forum -- BAIC 0 10-14-2007 03:31 PM
Who attened the Redhook and/or KTR dyno day meets? REDrum New England Impreza Club Forum -- NESIC 10 12-13-2006 10:31 PM
OK..who was tuning the UTEC on their WRB WRX at West Beach Park in Windermere area WhiteWRXBoy South East Region Forum 1 03-02-2004 11:24 AM
Anyplace in So-cal to dyno-tune my Utec? alltractionWRX Southern California Impreza Club Forum -- SCIC 3 01-20-2003 01:45 AM
Anyone able to dyno tune unichip 7-28 or 7-29? Onederer Southern California Impreza Club Forum -- SCIC 2 07-27-2002 09:43 PM


All times are GMT -4. The time now is 03:07 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.