I'd like to start a thread (in fact I HAVE!) that enumerates all of the different UTEC board revisions and their differences.

Any information would be great. I have nothing to start with.

Post away -- please stay on topic and don't hypothesize.

RESULTS: See Pete@TurboXS's post a few posts down :)

1-4 have dip switches to mess with for loading firmware. 5&6 + have a dial.

Rev 4 - works on 2002 WRX, 8 dip switches

Rev 5 - works on 2002-2003 WRX, 2 switches (FC disable, Reflash)
Changes were made to the UTEC for the new fuel tank pressure sensor and polarity changes of some other sensors.

Rev 6 - works on 2002-2004 (and 2005?) WRX, 2 switches (FC disable, Reflash)

I think there is a Revision 6b as well..
I don't know anything about the earlier versions.

Excellent -- keep the details coming everyone.

Is the Rev6 the only one that will run a JDM ecu and not throw an injector CEL?

Jblaine, why dont you edit your first post to include all the good info that piles up in this thread? It will make it a lot easier for the rest of us. :)

Rev 4 - works on 2002 WRX, 8 dip switches

Rev 5 - works on 2002-2003 WRX, 2 switches (FC disable, Reflash)
Changes were made to the UTEC for the new fuel tank pressure sensor and polarity changes of some other sensors.

Rev 6 - works on 2002-2004 (and 2005?) WRX, 2 switches (FC disable, Reflash)

I think there is a Revision 6b as well..
I don't know anything about the earlier versions.


WRX UTEC

Revision 0 (shown below with missing processor board) to Revision 3

Prototypes, initial test boards and pre-production boards released to beta testers.

http://www.txs.com.au/misc/Rev_0small.jpg


Revision 4

Official release
Two piece aluminium case (removable switch plate)
Dipswitch block (8 switches)


Revision 5

B137-23 Fuel Tank Sensor Line signal added

One piece case design
Left toggle switch - Flash
Right toggle switch - FCD


Revision 6a and 6b

All signal lines passed through
Billet aluminium case or one piece aluminium case
Left toggle switch - FCD
Right toggle switch - Flash


Variants include an AUS STi / MY04 UTEC (Revision 6) which works on Australian MY04 WRX, Australian STi and JDM.


USA STi UTEC

Revision 1

Prototype


Revision 2

Official release
One piece aluminium case
Left toggle switch - FCD
Right toggle switch - Flash


EVO UTEC (Just to complete the list)

Revision 1

Prototype


Revision 2

Official release
One piece aluminium case


regards
Pete
(TurboXS)

Pete has spoken. ;)

Cool -- just thought it would be good to have all of the info in one spot. Thanks Pete!

Pete - will you confirm x99percent's model year to revision restrictions?

Pete - will you confirm x99percent's model year to revision restrictions?
They seem about right (which is why I quoted them in my post) but I'm not 100% sure. Nathan is probably the best guy to confirm them.


Pete has spoken.
You guys seems to have worked out the information already, I was just jumping on the bandwagon!

regards
Pete
(TurboXS)

WRX UTEC

.
.
.

USA STi UTEC

Revision 1

Prototype


Revision 2

Official release
One piece aluminium case
Left toggle switch - FCD
Right toggle switch - Flash


EVO UTEC (Just to complete the list)

Revision 1

Prototype


Revision 2

Official release
One piece aluminium case


regards
Pete
(TurboXS)


Hi Pete. I just received my USA STI UTEC and noticed 3 toggle switches. The manual refers to only 2 switches. Can you clarify for me what each of these 3 switches are? Is this a different/latest revision?

Thanks,
Abe

The latest USA STi UTEC does have 3 toggle switches. There are two processors fitted to this board so the extra toggle switch allows you to reflash the second processor. We'll amend the manual with the additional information soon.

regards
Pete
(TurboXS)

The latest USA STi UTEC does have 3 toggle switches. There are two processors fitted to this board so the extra toggle switch allows you to reflash the second processor. We'll amend the manual with the additional information soon.

regards
Pete
(TurboXS)


So which switches should be used for FCD & Flash (first processor)? 1st & 2nd, 2nd & 3rd, or 1st & 3rd? And which position should the switch (2nd processor) be in -- default position? Also, can you send me the ammended STI UTEC Manual (PDF) to silverraddo@yahoo.com when ready? Thanks.

Regards,
Abe

There is a supplement that should have been included in your UTEC box. I'll send one to you on Monday via email. If you don't hear from me shoot an email to Nathan@turboxs.com

-Nathan
www.turboxs.com

There is a supplement that should have been included in your UTEC box. I'll send one to you on Monday via email. If you don't hear from me shoot an email to Nathan@turboxs.com

-Nathan
www.turboxs.com


Will do. Thanks.

-Abe

Nathan,,I just recieved my new STI utec also ,,,I didnt get the supplement either.
Could you email it to me ,,
Thanks
Rudy


jagcars26@aol.com

I got the supplement, but I'm not sure what to do with it. Is there new software coming out soon?

i just emailed you nathan about getting a supplemental packet. My sTi utec was missing one as well.


bumper for more informaion on possible new software

UTEC ready for 05 WRX yet?

Yes, the latest UTEC works for all US WRXs.

What is the second processor used for. Just the DBW revlimit restriction?
I only have one processor.:(

TMS

What is the second processor used for. Just the DBW revlimit restriction?
I only have one processor.:(

TMS

but 2 balls..

Strange how life works out

What is the second processor used for. Just the DBW revlimit restriction?
I only have one processor.:(

TMS

When did the second processor got introduced in the STI UTEC. Is it still considered Revision 2 or Revision something else since it includes new hardware. Or Revision means software only?

Also I echo the question above what is(could be) the second processor used for? Is it like the solenoid for water/alky injection? Anything else?

Cheers

Nick

Rev 4 - works on 2002 WRX, 8 dip switches

Rev 5 - works on 2002-2003 WRX, 2 switches (FC disable, Reflash)
Changes were made to the UTEC for the new fuel tank pressure sensor and polarity changes of some other sensors.

Rev 6 - works on 2002-2004 (and 2005?) WRX, 2 switches (FC disable, Reflash)

I think there is a Revision 6b as well..
I don't know anything about the earlier versions.

So does that mean the revision 4 can't be reflashed? Are there any important revisions since then?

So does that mean the revision 4 can't be reflashed? Are there any important revisions since then?Reflashing the software in the UTEC doesn't change the hardware of the UTEC.

The revision changes are changes to the hardware. These changes were made so that the UTEC could work with the latest changes Subaru made to the ECU and engine harness through the years.

You can run the latest 5.0 firmware on your revision 4 UTEC on a 2002 WRX.

Sorry to dig up a old thread but I'm wondering if anyone can clarify what the 3 Toogle Switches are for the STi UTEC?

Tried doing some tests and found if you move the right toggle switch to the up position then connect to the UTEC is shows DBW Signal etc etc.

Basically which positions should the switches be if attemping to flash with firmware? Just curious as the manual doesn't state this...

Pmed you..MINE!

:huh:

I have nothing for sale. This thread was to list the revision differences. I have never owned a UTEC, marylandecstasy.

Pmed you..MINE!

Umm not sure who you PM'd but it wasn't me.

By the way the middle switch must be set to the up postion(flash) if uploading new firmware. I found this information by asking Turbo XS and the new firmware is not too far away I'm told?