Welcome to the North American Subaru Impreza Owners Club Sunday December 21, 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 10-25-2002, 11:41 AM   #1
TurboXS
NASIOC Vendor
 
Member#: 4143
Join Date: Feb 2001
Location: Gaithersburg, MD USA
Vehicle:
2002 WRX Wagon
WR Blue

Default UTEC Tuning and Octane

Guys,

I just wanted to post a little general advice regarding Octane and UTEC tuning.

We tune all our maps on 93 Octane gasoline. If you live in an area where you can not get this grade of gas (or better), you will likely need to make some minor modifications to your maps to increase your safety margin and avoid any det. We made the UTEC "User Tunable" for a reason.

A general rule of thumb would be to knock off 1-1.5 degrees of timing for every Octane point less than 93 you run. Therefore, if you get 91 Octane, take 2-3 degrees of timing out across the board. Yes, this will reduce power, but that is the price of safety. Adding a little fuel may help as well, but is not as effective as reducing ignition advance.

Come mid-November we will start to get reformulated "winter gas" here in the DC Metro area. If we need to make "winter gas" maps we will and we will make them available. Here is a link to some info regarding what areas of the country get reformulated gas: http://www.energy.ca.gov/gasoline/ty..._gasoline.html

Hope that helps.

Mark
TurboXS
* Registered users of the site do not see these ads.
TurboXS is offline   Reply With Quote
Old 10-25-2002, 11:44 AM   #2
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Interesting info on the reformulated gas... unfortunately we get in here in Chicago pretty quick, not to mention we get crappier gas even just normally in the summer. I feel bad for the CA guys, though. :-/
8Complex is offline   Reply With Quote
Old 10-25-2002, 03:57 PM   #3
RiftsWRX
Scooby Guru
 
Member#: 6124
Join Date: Apr 2001
Chapter/Region: MWSOC
Location: Glendale Hts, IL, USA
Vehicle:
2000 NFR AP1 S2000
'07 Honda FIT sport (5MT)

Default

Very good read!

Chicago gas has suck.... we are the black sheep

Alcohol, and oxygen.. bah

Jorge (RiftsWRX)
www.ProjectWRX.com
RiftsWRX is offline   Reply With Quote
Old 10-26-2002, 01:14 PM   #4
hobbzz
Scooby Specialist
 
Member#: 24172
Join Date: Sep 2002
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
04 STI
JBP

Default

Mark... not trying to hi-jack but I figured you'd see it here. I heard you will be coming out with an "auxiliary" rotary knob to switch between maps. One that can be mounted anywhere in the cabin. Is this true? If so, do you have any idea when this will be available? If not, would it be possible for me to fabricate one myself? I really want UTEC over unichip because of the daily drivability and safety, but it is useless to me if I have to pull the car over ans rip up the floor to get to the board to switch between maps. Any help would be appreciated!
hobbzz is offline   Reply With Quote
Old 10-27-2002, 05:36 AM   #5
Onederer
I am NOT nice
Moderator
 
Member#: 7952
Join Date: Jun 2001
Chapter/Region: SCIC
Vehicle:
2014 Ford Fiesta ST
White

Default

Onederer is offline   Reply With Quote
Old 10-29-2002, 01:35 PM   #6
CobraKLR
Scooby Newbie
 
Member#: 12986
Join Date: Dec 2001
Location: Planet Utah
Vehicle:
2002 WRX
White

Default

TurboXS, what are your feelings on using octane boosters? I am one of the unlucky saps that get the 91 octane sludge that they call gas, plus the oxyagenated stuff on top of that in the winter. Will using a octane booster allow me to run the stock 93 octane maps, or are there other issues here as well?
CobraKLR is offline   Reply With Quote
Old 10-30-2002, 08:11 AM   #7
mlambert
Scooby Guru
 
Member#: 13831
Join Date: Jan 2002
Location: 99 problems but a bitch aint 1
Default

prolly wouldnt use off the shelf octane booster cause most of those have extra added stuff that you dont need/want

guys in my area run toulene cause we only get 92oct
mlambert is offline   Reply With Quote
Old 11-02-2002, 03:35 AM   #8
AMCFightFan
Scooby Newbie
 
Member#: 21447
Join Date: Jul 2002
Location: SeaTac, WA
Vehicle:
02 WRX Sportswagon
Silver

Default

AMCFightFan is offline   Reply With Quote
Old 11-04-2002, 01:57 AM   #9
CobraKLR
Scooby Newbie
 
Member#: 12986
Join Date: Dec 2001
Location: Planet Utah
Vehicle:
2002 WRX
White

Default

Quote:
Originally posted by AMCFightFan
http://elektro.cmhnet.org/~charlie/p...i/toluene.html

Try this.
Thanks,
It sounds very promising. A map for "toulene-nated" gas and one for regular sludge. The other option I am looking at is propane injection.
Have you tried it yet?
CobraKLR is offline   Reply With Quote
Old 11-04-2002, 02:22 AM   #10
gpatmac
Scooby Guru
 
Member#: 18446
Join Date: May 2002
Chapter/Region: MAIC
Location: Stratford, CT
Vehicle:
2002 WRX wagon
psm

Default

What do I need to look at doing to my map if I put in racegas? Is it only timing that needs to be adjusted? What might the effect be if I ran with the racegas without adjusting my current map, based on the fact that I'm 'rich' throughout my 1/4 mile?

Hey, Nathan. You know, I'd give you an extra $10-20 for the 1st draft of the WRX Tuning Guide.

Pat
gpatmac is offline   Reply With Quote
Old 11-04-2002, 02:41 AM   #11
CobraKLR
Scooby Newbie
 
Member#: 12986
Join Date: Dec 2001
Location: Planet Utah
Vehicle:
2002 WRX
White

Default

Quote:
Originally posted by gpatmac
What do I need to look at doing to my map if I put in racegas? Is it only timing that needs to be adjusted? What might the effect be if I ran with the racegas without adjusting my current map, based on the fact that I'm 'rich' throughout my 1/4 mile?

Hey, Nathan. You know, I'd give you an extra $10-20 for the 1st draft of the WRX Tuning Guide.

Pat
I second the willingness to pay for a UTEC tuning guide. I would rather shell out a couple of bucks for good info from the experts rather than learn the hard way (read blown engine).
CobraKLR is offline   Reply With Quote
Old 11-04-2002, 09:47 AM   #12
z&cobb
Scooby Specialist
 
Member#: 12344
Join Date: Nov 2001
Chapter/Region: MAIC
Location: Mountains of Maryland
Vehicle:
2002 2JC
blue

Default

Quote:
Originally posted by CobraKLR

I second the willingness to pay for a UTEC tuning guide. I would rather shell out a couple of bucks for good info from the experts rather than learn the hard way (read blown engine).
Yeah, like the patent lawyers do.

Sell a notebook binder with update page capabiity as more knowledge comes in. That way you remain current. It could even include a MAP section, with some reasoning.
z&cobb is offline   Reply With Quote
Old 11-05-2002, 10:26 AM   #13
z&cobb
Scooby Specialist
 
Member#: 12344
Join Date: Nov 2001
Chapter/Region: MAIC
Location: Mountains of Maryland
Vehicle:
2002 2JC
blue

Default

Quote:
Originally posted by mlambert
prolly wouldnt use off the shelf octane booster cause most of those have extra added stuff that you dont need/want

guys in my area run toulene cause we only get 92oct
How about an octane booster that consists of MMT in toluene as a carrier? Labels in the old days told you what was actually in it.
Even xylene would be a good carrier.
z&cobb 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
Tuned and octane question Striker13 Engine Management & Tuning 2 12-28-2005 01:13 AM
UTEC tuning and knock between shift tmarcel Engine Management & Tuning 6 11-25-2003 10:06 AM
Help with installs and Utec tuning WRXonmind Tri-State Area Forum 2 04-08-2003 05:25 PM
Tuning UTEC for 91 Octane? muddywaters Engine Management & Tuning 6 01-15-2003 11:44 PM
New UTEC Map and some log's from tongiht's tuning... DiMensionX Engine Management & Tuning 17 10-07-2002 12:02 AM


All times are GMT -4. The time now is 11:01 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.