Welcome to the North American Subaru Impreza Owners Club Wednesday December 17, 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 09-29-2002, 02:06 PM   #1
ScoobieSnaX
Scooby Specialist
 
Member#: 10844
Join Date: Oct 2001
Location: location, location...
Vehicle:
2004 Acura TL Navi
Pearl

Talking UTEC Initial Review/Comments

Well its been ~24hours since UPS dropped off the UTEC and so far I give it a 9.5/10

Here is what I like about the unit:

1. Simplicity

The UTEC's software is very easy to use. The instructions included are quite straight forward, relevant, and helpfull in getting started right away! The remote switch (future mod) idea is great....being able to switch between maps without having to bring the laptop/PDA sure makes it easier on the nerves when you park your car at the movies

2. Extensibility

The future feature set rumors are enough to get excited all over again! The thing I enjoy most about this unit is that you can upgrade the firmware to accomodate new features. I didn't own the Link ECU long enough to see any firmware updates come out but I do remember some people having to send their boards back to be "re-programmed" due to issues (poor design IMO).

3. Performance feel & interaction

The map shipped to me is the Stage4TMI setup. Judging from the name I have a feeling its the Stage4 kit with the TurboXS HUGE TMI (something I don't have). Driving around all last night I had a few knock events (check engine light flickered every once in a while) and I could feel the ECU pull timing out. As far as knock control goes......it works.....and works VERY well. I remember setting up the knock control settings for the Link but it seemed too slow or not sophisticated enough to catch the knock and adjust.

Acceleration is STRONG! The kind of acceleration you feel not only in your neck being pulled back, but your legs, a$$, and arms!! Honestly, its a weird feeling having your pant leg shift so much during acceleration. I punched it a few times in 1st & 2nd around town and could feel the 18" Bridgestone S-03's fighting for grip.

Around town driving is great. I can't yet notice the switch-over from ECU to UTEC control but I have a feeling I'll get more used to it and be able to notice. The old Unichip hesitation is gone but I still get a bit of faint jerkyness. Even with my complete stage4 setup minus the engine management (using factory ecu) the car hesitated a bit. My theory here is that is has something to do with aftermarket EBC's not being able to control part throttle boost. If I hook up the TurboXS ABC w/factory solonoid, acceleration is smoother. I can't explain it other than the UTEC is programmed to "see" a certain amout of boost at a certain throttle position......if you go outside that, results are sketchy. More testing on my part needs to be done here though

4. Datalogging

Very cool feature. Works great. I did notice though, my A/F ratio readings say "rich" insead of the exact reading when I go WOT.....strange. Good thing I have my WBo2!!

------------------------------------------------------

Let me know if you have any questions. A few co-workers and I are designing an add-on for the UTEC -details to follow next week.

Thanks again Nathan! Great job TurboXS......great job!!!!

Oh, by the way.........DOES ANYONE HAVE A PLAIN STAGE4 MAP (w/o TXS-TMI)????

-----------------------
ScoobieSnaX
-----------------------
* Registered users of the site do not see these ads.
ScoobieSnaX is offline   Reply With Quote
Old 09-29-2002, 02:13 PM   #2
denverwrz
Scooby Newbie
 
Member#: 22710
Join Date: Aug 2002
Location: denver, co
Vehicle:
02 wrx
sadona red pearl

Default mods please

Scoobie, what mods do you have?? Does anyone know if something has do be done to the UTEC before it is used at high altitude (denver)??
denverwrz is offline   Reply With Quote
Old 09-29-2002, 02:27 PM   #3
ScoobieSnaX
Scooby Specialist
 
Member#: 10844
Join Date: Oct 2001
Location: location, location...
Vehicle:
2004 Acura TL Navi
Pearl

Default

Performance mods are (in order of newest to oldest):

-Turbo XS UTEC (stg4)
-Exedy clutch/flywheel
-Blitz SBC-iD boost controller
-Walbro fuel pump
-VF30
-Sti Injectors
-3" Turbo-back
-M2 up-pipe
-Injen intake
ScoobieSnaX is offline   Reply With Quote
Old 09-29-2002, 02:36 PM   #4
denverwrz
Scooby Newbie
 
Member#: 22710
Join Date: Aug 2002
Location: denver, co
Vehicle:
02 wrx
sadona red pearl

Default cel

To what do you attribute the cel and what are you going to do to correct it? Same question for the knock??
denverwrz is offline   Reply With Quote
Old 09-29-2002, 02:36 PM   #5
denverwrz
Scooby Newbie
 
Member#: 22710
Join Date: Aug 2002
Location: denver, co
Vehicle:
02 wrx
sadona red pearl

Default cel

To what do you attribute the cel and what are you going to do to correct it? Same question for the knock??
denverwrz is offline   Reply With Quote
Old 09-29-2002, 02:44 PM   #6
ScoobieSnaX
Scooby Specialist
 
Member#: 10844
Join Date: Oct 2001
Location: location, location...
Vehicle:
2004 Acura TL Navi
Pearl

Default

The CEL will light up if knock is detected (feature of the UTEC). I'm gong to first try to find a map which is not tuned for the stock TMI. I might add a bit of fuel too.....just to see. Its transient knock though.......not existent all the time...
ScoobieSnaX is offline   Reply With Quote
Old 09-29-2002, 02:55 PM   #7
DSMcG
Scooby Newbie
 
Member#: 2257
Join Date: Sep 2000
Location: Buena Park, Ca, USA
Vehicle:
2004 WRX STI
Silver

Default Specific UTEC Questions

Skoobiesnax

Thankyou for taking the time to share your observations. I have a couple of questions:

- You touched on the transition between closed loop / open loop operation, can you elaborate a little more? have you had a chance to drive around twisty / partial throttle typr corners?

- I've read the boost control capability is still a work in progress...you're version is operational? This is one of the key features that has sold me on the unit. Overboost spiking has been stated as one of the problems to be ironed out. Any comments?

I'm on the initial order for shipment - next week I'm told - I'm VERY interested in your (and other initial users) about the drivability and initial power potential of this unit. My mods list is a virtual copy of yours (but w/ PWR topmount).

Thank you in advance - DSMcG
DSMcG is offline   Reply With Quote
Old 09-29-2002, 03:11 PM   #8
JenisonWRX
Scooby Specialist
 
Member#: 6049
Join Date: Apr 2001
Chapter/Region: MWSOC
Location: Jenison.Doomhammer
Vehicle:
02 WRX & 99 RS
Black

Default

Quote:
Originally posted by ScoobieSnaX
The CEL will light up if knock is detected (feature of the UTEC). I'm gong to first try to find a map which is not tuned for the stock TMI. I might add a bit of fuel too.....just to see. Its transient knock though.......not existent all the time...
what is the threshold for this CEL coming on?
JenisonWRX is offline   Reply With Quote
Old 09-29-2002, 03:14 PM   #9
desiwrx02
Scooby Specialist
 
Member#: 20168
Join Date: Jun 2002
Location: the D town, mich
Vehicle:
02 wrx
black and blue all over

Default

The logger says rich at WOT. pretty damn useless if you ask me.
Ajay
desiwrx02 is offline   Reply With Quote
Old 09-29-2002, 03:20 PM   #10
mlambert
Scooby Guru
 
Member#: 13831
Join Date: Jan 2002
Location: 99 problems but a bitch aint 1
Default

Quote:
Originally posted by ScoobieSnaX
The CEL will light up if knock is detected (feature of the UTEC). I'm gong to first try to find a map which is not tuned for the stock TMI. I might add a bit of fuel too.....just to see. Its transient knock though.......not existent all the time...
Since you can change the map, why not just tune yours? Jorge did a great writeup on his webpage on how he goes thru and adjusts the map. Thats the cool thing about aftermarket ecus...you get to tune your car
mlambert is offline   Reply With Quote
Old 09-29-2002, 03:22 PM   #11
rayder
Scooby Specialist
 
Member#: 14535
Join Date: Jan 2002
Location: SoCal
Vehicle:
02 Impreza WRX
Silver

Default

i just thoght of something....

since u can store 3 maps on the UTEC, you can make one map set so the car won't even start. (is this possible?)

then as a added security measure, flip the switch to that setting when you park your car somewhere where you don't feel it's safe. As an added security measure, if the would be thief gets past your alarm.. there's no way he would be able to start your car! Who would think to check the ECU?
rayder is offline   Reply With Quote
Old 09-29-2002, 03:27 PM   #12
JenisonWRX
Scooby Specialist
 
Member#: 6049
Join Date: Apr 2001
Chapter/Region: MWSOC
Location: Jenison.Doomhammer
Vehicle:
02 WRX & 99 RS
Black

Default

Quote:
Originally posted by rayder
i just thoght of something....

since u can store 3 maps on the UTEC, you can make one map set so the car won't even start. (is this possible?)

then as a added security measure, flip the switch to that setting when you park your car somewhere where you don't feel it's safe. As an added security measure, if the would be thief gets past your alarm.. there's no way he would be able to start your car! Who would think to check the ECU?
You would need your laptop with you all the time. Wait for it to boot up to start your car.

a better solution would be have a switch for the ground on the ecu. No electricity would mean no ecu
JenisonWRX is offline   Reply With Quote
Old 09-29-2002, 03:28 PM   #13
gossamer_monster
Scooby Specialist
 
Member#: 3574
Join Date: Jan 2001
Chapter/Region: NESIC
Vehicle:
2002 WRX
Blase' Yellow----R.I.P.

Default

Quote:
Originally posted by rayder
i just thoght of something....

since u can store 3 maps on the UTEC, you can make one map set so the car won't even start. (is this possible?)

then as a added security measure, flip the switch to that setting when you park your car somewhere where you don't feel it's safe. As an added security measure, if the would be thief gets past your alarm.. there's no way he would be able to start your car! Who would think to check the ECU?
Err, ya this has been discussed previously.

I believe you can store 5 maps, stock plus 4.

Bill
gossamer_monster is offline   Reply With Quote
Old 09-29-2002, 03:29 PM   #14
rayder
Scooby Specialist
 
Member#: 14535
Join Date: Jan 2002
Location: SoCal
Vehicle:
02 Impreza WRX
Silver

Default

you don't need your laptop... there's a switch on the UTEC.

You just flip the switch.
rayder is offline   Reply With Quote
Old 09-29-2002, 03:37 PM   #15
gossamer_monster
Scooby Specialist
 
Member#: 3574
Join Date: Jan 2001
Chapter/Region: NESIC
Vehicle:
2002 WRX
Blase' Yellow----R.I.P.

Default

Quote:
Originally posted by rayder
you don't need your laptop... there's a switch on the UTEC.

You just flip the switch.
Yup and someday a remote switch. Oh happy days.

Bill
gossamer_monster is offline   Reply With Quote
Old 09-29-2002, 05:04 PM   #16
thejean
Scooby Specialist
 
Member#: 17763
Join Date: Apr 2002
Chapter/Region: W. Canada
Location: Calgary, AB
Default

Quote:
Originally posted by rayder
i just thoght of something....

since u can store 3 maps on the UTEC, you can make one map set so the car won't even start. (is this possible?)

then as a added security measure, flip the switch to that setting when you park your car somewhere where you don't feel it's safe. As an added security measure, if the would be thief gets past your alarm.. there's no way he would be able to start your car! Who would think to check the ECU?
That would be a very sweet feature if the maps could be adjusted to prevent starting. the only issue i can see is that using the maps alone, the car will still try to start and it just may not be safe for the engine. plus, the boot-up would be a drag...

I think a hidden power-off switch would be a sweet idea though like Jenison proposed. Anti-theft device for like five bucks and would probably work just as good. i can see the guy now, got the car all hot-wired and then... no-go. the trick would be to put the switch somewhere he would never think to look. wire it into the cruise control/defogger switch and the poor bastard would never know it was there. ok, i'm no electronics wizard so who can help out with the circuitry?
thejean is offline   Reply With Quote
Old 09-29-2002, 05:27 PM   #17
ScoobieSnaX
Scooby Specialist
 
Member#: 10844
Join Date: Oct 2001
Location: location, location...
Vehicle:
2004 Acura TL Navi
Pearl

Default

The UTEC does come with a "valet" setting. With the future remote switch, you can switch to "valet" mode where its limited to only 7psi! ha ha ha......

I had an alignment done on my car at Les Schwab in Federal Way, WA.......the young phuker who test drove it afterward burnt the clutch up. I could smell it when he came back. The turbo timer was still running after 1 minute (auto-timer).

I just wish I had this feature back then.......
ScoobieSnaX is offline   Reply With Quote
Old 09-30-2002, 02:20 AM   #18
Wombat North
Scooby Specialist
 
Member#: 21267
Join Date: Jul 2002
Location: Eats, roots and then leaves
Vehicle:
STI, EWG 8cm Green
UTEC/ECUtek/WI & SD tune

Default

Anti thief
Just flip the map switch to where their is no map. Car starts then dies because no map. I tried that works ok
Wombat North is offline   Reply With Quote
Old 09-30-2002, 02:36 AM   #19
rayder
Scooby Specialist
 
Member#: 14535
Join Date: Jan 2002
Location: SoCal
Vehicle:
02 Impreza WRX
Silver

Default

sweet!
rayder is offline   Reply With Quote
Old 09-30-2002, 08:57 AM   #20
thejean
Scooby Specialist
 
Member#: 17763
Join Date: Apr 2002
Chapter/Region: W. Canada
Location: Calgary, AB
Default

Quote:
Originally posted by rayder
sweet!
ditto!!

Lets not say anymore about this...
thejean is offline   Reply With Quote
Old 09-30-2002, 10:21 AM   #21
roybfr
Scooby Specialist
 
Member#: 14456
Join Date: Jan 2002
Chapter/Region: MWSOC
Location: WDM Iowa
Vehicle:
09 BMW 335i Sedan
69/72/01 Corvettes

Default

ScoobieSnaX

I see that you are still using your SBC-id. Are you going to use the UTEC's boost control features or stick with the SBC-id? I am currently runing a HPMBC with my Stage 4 but have a SBC-id sitting the garage that I have been waiting to install. I have held off until I get the UTEC to see how well it controls boost but if the SBC-id does a better job I will just get it installed before my UTEC gets here some time in October.

It would be nice to know at what A/F and above that the data logger reads rich, and why is just says rich instead of the actual A/F.

Troy
roybfr is offline   Reply With Quote
Old 09-30-2002, 11:29 AM   #22
nmyeti
Scooby Specialist
 
Member#: 4980
Join Date: Mar 2001
Location: Albuquerque, NM USA
Default

Quote:
Originally posted by desiwrx02
The logger says rich at WOT. pretty damn useless if you ask me.
Ajay
Ajay,
What your seeing is the limit of the factory front AF/Sensor.

It will report voltages below 12:1, but in truth they are not accurate at all. It was better to show "rich" than a false voltage. We are working on a real wide band upgrade for the UTEC to fix the issue.

-Nathan
nmyeti is offline   Reply With Quote
Old 09-30-2002, 11:49 AM   #23
thejean
Scooby Specialist
 
Member#: 17763
Join Date: Apr 2002
Chapter/Region: W. Canada
Location: Calgary, AB
Default

Quote:
Originally posted by nmyeti


Ajay,
What your seeing is the limit of the factory front AF/Sensor.

It will report voltages below 12:1, but in truth they are not accurate at all. It was better to show "rich" than a false voltage. We are working on a real wide band upgrade for the UTEC to fix the issue.

-Nathan
Good job guys! Any idea how much the upgrade might cost (i.e., ceiling value)?

jc
thejean is offline   Reply With Quote
Old 09-30-2002, 12:52 PM   #24
nmyeti
Scooby Specialist
 
Member#: 4980
Join Date: Mar 2001
Location: Albuquerque, NM USA
Default

Quote:
Originally posted by thejean


Good job guys! Any idea how much the upgrade might cost (i.e., ceiling value)?

jc
JC,
I am not sure off the top of my head. We are looking at the cost of a real lab quality 5 volt 5 wire sensor and the additional electronics to control it (i.e. temp compensation etc). This combined with data logging functions usually sells for around $700-$1000 from FJO or Motec. We hope to offer those features and some additional fuel control functionality (setting target A/F in software) at a competitive price. I know that doesn't answer your question, but we are so early in the process of putting this together that it's still more conceptual than anything.

-Nathan
nmyeti is offline   Reply With Quote
Old 09-30-2002, 12:58 PM   #25
nmyeti
Scooby Specialist
 
Member#: 4980
Join Date: Mar 2001
Location: Albuquerque, NM USA
Default Re: cel

Quote:
Originally posted by denverwrz
To what do you attribute the cel and what are you going to do to correct it? Same question for the knock??
The CEL flashes when the car has even the slightest bit of detonation. The UTEC is pulling timing at those points where the CEL flashes.

In the short term I would suggest adding a bit of fuel (small % increase should do it) to the places where it is detonation.

In the long term our maps will be better as we have a wider number of cars and fuel types under our belts.


-Nathan
nmyeti 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
HKS Hipermax 2 Coilovers : Initial Review dan avoN7 Brakes, Steering & Suspension 3 01-26-2004 12:38 AM
TurboXS Stage 3 Initial review Davenow Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 22 04-27-2003 10:24 PM
Purchased my SRT-4 3 days ago. My initial reviews. Mighty Mouse Off-Topic 195 02-19-2003 08:10 AM
UTEC & Mods Completely in, My initial review DiMensionX Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 42 10-03-2002 12:43 PM
UTEC Initial review and tuner concepts are done RiftsWRX Engine Management & Tuning 36 09-26-2002 01:09 AM


All times are GMT -4. The time now is 06:26 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.