Welcome to the North American Subaru Impreza Owners Club Friday April 18, 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 > UTEC

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 12-10-2003, 11:32 AM   #1
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Question UTEC basics

Hey guys I was just had a few ultra-n00b-basic questions about the UTEC. IIRC the ECU is in the passenger footwell under the molded carpet right? And there's a map selector switch on the UTEC itself according to TXS's site/pictures. So to switch maps (or to load new maps for that matter) you would have to pull up the carpet to get at it right?

I've only done physical mods to the car and have never dabbled in computer tuning so I want to learn as much as possible before making the plunge. Is there a site/FAQ regarding all the basics? Off the top of my head I have questions regarding wide Band O2 sensors and wot other gauges I'll need other then EGT. Oh also, I've done searches and have seen people mention something about 60% throttle. Wot's the deal w/ that? Is the UTEC not optimized for part throttle?

Thanks,
Conrad
* Registered users of the site do not see these ads.
Desolate One is offline   Reply With Quote
Old 12-10-2003, 12:42 PM   #2
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

Default

For the updated UTEC Quick Tune Guide click here

The above is the basics of tuning your UTEC.

To load maps you don't have to take up the carpet, just leave the serial cable accessable.

To swap between maps you will need the TurboXS remote map selector switch which is an additional item.

To load firmware you will have to lift the carpet. New Firmware releases come out about every 6-9 months.

Currently the UTEC only takes control of the fueling and timing over 60% TPS. The Boost can be controlled by the UTEC at any TPS position. The reason that the UTEC waits until 60% TPS is that before this the ECU is running closed loop fuel control. You car will run better with the ECU running this section.

Last edited by mick_the_ginge; 03-14-2007 at 07:33 PM.
mick_the_ginge is offline   Reply With Quote
Old 12-10-2003, 01:04 PM   #3
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Great, thanks for the reply Mick! That certainly cleared up the 60% question I had.
I'll have to register on WRX Hackers when I get home. It wouldn't let me access that portion of the site.
I'll definitely take a look into the remote map selector switch.

Thanks again,
Conrad
Desolate One is offline   Reply With Quote
Old 12-10-2003, 06:06 PM   #4
Mildmanneredman
Scooby Newbie
 
Member#: 29962
Join Date: Nov 2002
Location: Tucson
Default

You can also download the manual on the TXS website.
Mildmanneredman is offline   Reply With Quote
Old 12-10-2003, 06:41 PM   #5
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally posted by Mildmanneredman
You can also download the manual on the TXS website.
Just printed it out. Time to study!
Desolate One is offline   Reply With Quote
Old 12-10-2003, 06:55 PM   #6
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

Default

The TurboXS UTEC manual is not the same as the Quick Tune Guide. Read the official UTEC manual first then use the Quick Tune Guide to fill in some of the gaps.
mick_the_ginge is offline   Reply With Quote
Old 12-10-2003, 10:28 PM   #7
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally posted by mick_the_ginge
The TurboXS UTEC manual is not the same as the Quick Tune Guide. Read the official UTEC manual first then use the Quick Tune Guide to fill in some of the gaps.
Yah, I've printed out the TXS manual and will study that. I've also downloaded your guide and will go over that as well.
Thanks again guys!
Desolate One is offline   Reply With Quote
Old 12-16-2003, 10:13 PM   #8
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Don't mean to bring an old thread back from the grave but I feel it's silly to start a new one regarding the same topic.

I seem to be having trouble connecting to the UTEC. I've followed TXS's instructions as per the guide and I get nothing on my HyperTerminal window. I've checked and switched COM ports and made sure I was getting a red light on the UTEC. Granted it isn't in the vehicle but I just wanted to load the stage 1 map before the install. That is wot the 9V adaptor is for right? Am I missing something?

Thanks again guys.
Conrad
Desolate One is offline   Reply With Quote
Old 12-17-2003, 01:14 AM   #9
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

Default

Connect the UTEC power to a car battery and then see if it works. Maybe the 9volter is not quite enough to power it.

Mick
mick_the_ginge is offline   Reply With Quote
Old 12-17-2003, 01:29 AM   #10
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally posted by mick_the_ginge
Connect the UTEC power to a car battery and then see if it works. Maybe the 9volter is not quite enough to power it.

Mick
Well the 9V is brand new so I'm kinda worried. Hopefully I'm doing something wrong in regards to a HyperTerminal Setting. I mean I get a red light on the UTEC and I have all the settings like the manual shows but when I click connect nothing happens. I may take it to GRD this week and see wot Tuan has to say about it.
Anything else I should look out for?

Thanks again,
Conrad
Desolate One is offline   Reply With Quote
Old 12-17-2003, 01:32 AM   #11
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

Default

Have you tried pressing <CR> enter a couple of times. Mine always comes up blank, I press enter a couple of times and it's there.

Mick
mick_the_ginge is offline   Reply With Quote
Old 12-17-2003, 02:02 AM   #12
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally posted by mick_the_ginge
Have you tried pressing <CR> enter a couple of times. Mine always comes up blank, I press enter a couple of times and it's there.

Mick
I will definitely try that tomorrow after work. Right now I'm far too tired to start messing with it again. Thanks for all the help. I'll let you know how it goes tomorrow!

Desolate One is offline   Reply With Quote
Old 12-17-2003, 02:23 AM   #13
Aaron'sWRX
Scooby Newbie
 
Member#: 34150
Join Date: Mar 2003
Location: Washington
Vehicle:
02 WRX

Post

I have to hit enter once before it comes up. Also, if you have another software program running in the background that uses a serial port, you have to disable the program. Such as HotSync for palm.

Aaron
Aaron'sWRX is offline   Reply With Quote
Old 12-17-2003, 11:19 AM   #14
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally posted by Aaron'sWRX
I have to hit enter once before it comes up. Also, if you have another software program running in the background that uses a serial port, you have to disable the program. Such as HotSync for palm.

Aaron
At the moment I don't have anything even connected to any of my serial ports for the computer in question. I hope it is just a matter of hitting enter. That would take a load off my mind!
Desolate One is offline   Reply With Quote
Old 12-17-2003, 09:15 PM   #15
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Thank you thank you Mick & Aaron! I pressed enter and it came right up! I've also successfully loaded a map (stage 1) I downloaded from TXS and as soon as I get my remote map selector switch it's going in the car!

You guys rock!

While I'm here, IIRC the base Stage 1 map is for a stock car so wot changes will I need to make for an uppipe? Uppipe/stealthback? Does TXS have a map for those mods? I only see a map for the TBE (Stage 2).
Desolate One is offline   Reply With Quote
Old 12-17-2003, 09:22 PM   #16
SloRice
Scooby Specialist
 
Member#: 44351
Join Date: Sep 2003
Chapter/Region: MWSOC
Location: Cincinnati, OH
Vehicle:
2004 Mitsubishi Evo
701whp 9.91@146

Default

I hit the ESC key after I click connect and the screen pops up.

Tim
SloRice is offline   Reply With Quote
Old 12-19-2003, 10:26 AM   #17
T-WRX
Scooby Specialist
 
Member#: 2468
Join Date: Sep 2000
Chapter/Region: South East
Location: JAX
Vehicle:
08 RS4
05 STi

Default

Quote:
Originally posted by Aaron'sWRX
I have to hit enter once before it comes up. Also, if you have another software program running in the background that uses a serial port, you have to disable the program. Such as HotSync for palm.

Aaron
Yepper. I used to have to disable the hotsync while my laptop was in the docking station. Now I switched to a USB serial port emulator. Although, sometimes I have to open hyperterminal twice to ensure that it connects.

Quote:
Originally posted by SloRice
I hit the ESC key after I click connect and the screen pops up.

Tim
Ditto.
T-WRX is offline   Reply With Quote
Old 12-22-2003, 03:18 PM   #18
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

I've found a Stage 1 + uppipe map on WRX Hackers but of course there is a "use at your own risk" disclaimer which doesn't set well with me. Would TXS be able to supply one for me if I give them a ring or is the only way through dyno tuning? Is there another TXS page with more maps somewhere on their site?
Desolate One is offline   Reply With Quote
Old 12-22-2003, 04:02 PM   #19
T-WRX
Scooby Specialist
 
Member#: 2468
Join Date: Sep 2000
Chapter/Region: South East
Location: JAX
Vehicle:
08 RS4
05 STi

Default

No, there is not a master page of TXS maps other than the base maps.

However, you can figure this out yourself. Try comparing the stage 2 w/uppipe on WRX Hackers (tuned by Nathan at TXS) to the stage 2 w/out uppipe (from TXS website). The same differences will apply to the addition of an uppipe to a base stage 1 map.

What you should see that fuel is added about 500 rpm sooner, and the boost is also adjusted as necessary to hit the target psi sooner.

Be careful pulling maps off wrxhackers if you aren't going to scrutinize them carefully, and compare them to base maps to determine exactly what the changes are. The "use at own risk" disclaimer is there for a reason.
T-WRX is offline   Reply With Quote
Old 12-22-2003, 06:16 PM   #20
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Wow, thanks for the info! Just another quick one if I may. I've noticed the maps are in text documents so this leads me to believe I can open up the files in a text editor and view them side by side, is this correct? If not how would I go about comparing the maps?

Also, do you guys think I should hold off completely untill I have EGT and wideband 02 guages before any tuning is started. I'm sure it's the smart thing to do. Any other recommendations on guages/things to monitor? I already have the boost gauge.

Thanks again.
Desolate One is offline   Reply With Quote
Old 12-22-2003, 07:12 PM   #21
gpatmac
Scooby Guru
 
Member#: 18446
Join Date: May 2002
Chapter/Region: MAIC
Location: Alexandria, VA
Vehicle:
2002 WRX wagon
psm

Default

http://www.clegg.us/utec/UTECMapCompare.asp

Be careful if you choose to use Notepad or something similar. I'm not computer savvy enough, but I have had problems when I've tried to edit my maps with it. Something about a checksum error.

I'd strongly urge you to wait until you had the tuning tools before you tuned. You have 2 pretty important ones in the boost gauge and the UTEC's knock detection, but the WB is crucial.
gpatmac is offline   Reply With Quote
Old 12-22-2003, 09:58 PM   #22
T-WRX
Scooby Specialist
 
Member#: 2468
Join Date: Sep 2000
Chapter/Region: South East
Location: JAX
Vehicle:
08 RS4
05 STi

Default

There is a very nice UTEC map editor tool available from WRX hackers. I open two versions of it at once, place the windows on top of each other, and then ALT-TAB between the two to compare.

The other nice feature on the map editor is that it always gives the proper checksum, and highlights any changes that you make (until you save-file).

Thanks for the link to the map comparison tool - I'll check it out!
T-WRX is offline   Reply With Quote
Old 02-01-2004, 11:47 AM   #23
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Okay, I'm real slow (hey it's been busy!) at getting my parts on and I had another couple basic questions.

A) Is the UTEC remote map selector switch lit?

B) When installing the ABC how do I set it? All the way counter-clockwise and adjust accordingly?

I have some time off work this week so I'm going to give it a go!

Thanks again for all your help.
Desolate One is offline   Reply With Quote
Old 02-03-2004, 11:19 AM   #24
cdvma
Scooby Specialist
 
Member#: 21980
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Central MA
Vehicle:
2002 PSM WRX (Sold)
2009 BMW X5

Default

A) No.
B) Screw in all the way, back out two turns, go for a run, adjust, run, adjust ect...
cdvma is offline   Reply With Quote
Old 02-03-2004, 11:47 AM   #25
Desolate One
Scooby Newbie
 
Member#: 22797
Join Date: Aug 2002
Location: Las Vegas
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally posted by cdvma
A) No.
B) Screw in all the way, back out two turns, go for a run, adjust, run, adjust ect...
I was thinking along the same lines as far as the ABC is concerned. Now when you say "all the way" do you mean counter-clockwise? I was going to give it a go that way this weekend that way, unless otherwise it should be turned all the way clockwise!
Desolate One 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
FS: (HR) Subaru STi and WRX parts - exhaust, dp, uppipe, FMIC, UTEC, CAI, etc. azrakain MAIC Private Classifieds 71 06-02-2011 08:21 PM
Really Basic UTEC stuff. A little Help Please. Aarondost08 UTEC 2 06-14-2009 01:00 PM
Basic UTEC vs UTEC Delta Unlikely Hero Newbies & FAQs 3 04-25-2008 08:59 PM
Basic UTEC Maps JackClark Engine Management & Tuning 3 09-10-2005 09:44 PM
Sumb Basic UTEC Stage4 Map question Brian Broz Engine Management & Tuning 3 05-06-2004 01:58 AM


All times are GMT -4. The time now is 10:23 AM.


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.