Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 02-27-2006, 01:55 PM   #1
subieworx
Scooby Guru
 
Member#: 47769
Join Date: Nov 2003
Chapter/Region: MWSOC
Default Stock EGT sensor...same as aftermarket???

I haven't been able to find an answer to this questions and need to know soon as I am changing my gauges out to a new unit.

Currently I have an EGT tapped in the manifold for #4. The unit I am getting will read EGT, but only from the ECU at this point. I have removed a ton of UP's before and obviously know there is an EGT sensor there that the ECU uses, but do not know if it is the same as my aftermarket sensor. My aftermarket sensor is a standard two wire k type sensor. I know the stock sensor is also a two wire sensor, but do not know if it is the same type (I assume it is).

I already have the EGT from the UP removed and have a resistor in the plug. I am wondering if I can take the two wires from my aftermarket sensor and splice them into the stock plug to allow the ECU to read EGT from my manifold instead of UP? I also know that the ECU will be unhappy when EGT's get too high when read on the Up sensor, but do not know what that limit is. I am concerned with this limit as I know the readings will be a bit higher with the sensor being int he manifold instead of in the Up although I have seen that the difference is not extreme.

Any help would be appreicated.

Tony
* Registered users of the site do not see these ads.
subieworx is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-27-2006, 02:13 PM   #2
Gethin
Scooby Specialist
 
Member#: 2998
Join Date: Nov 2000
Chapter/Region: VIC
Location: BC
Vehicle:
2002 WRX
WRB

Default

The stock EGT is a thermistor and only used by the ECU to detect that the uppipe cat is working, and works more or less like a on/off switch. If the uppipe cat gets too hot then the ECU goes into limp home mode. So you can't use the uppipe EGT as a proper temperature EGT like your aftermarket one, and you can't use the aftermarket one with the stock ECU as it won't work as it's resistance and type is different.
Gethin is offline   Reply With Quote
Old 02-27-2006, 02:15 PM   #3
subieworx
Scooby Guru
 
Member#: 47769
Join Date: Nov 2003
Chapter/Region: MWSOC
Default

What is the level at which it will go into limp mode? Do you know of a way to convert the signal of the K type to stock sensor?

Edit: I should also mention that this is for a Psi3 unit I will be using.

Last edited by subieworx; 02-27-2006 at 02:24 PM.
subieworx is offline   Reply With Quote
Old 02-27-2006, 02:27 PM   #4
Gethin
Scooby Specialist
 
Member#: 2998
Join Date: Nov 2000
Chapter/Region: VIC
Location: BC
Vehicle:
2002 WRX
WRB

Default

Sorry no idea on the conversion, probably not possible, the temp ceiling i'm not sure either, maybe someone else knows this?
Gethin is offline   Reply With Quote
Old 02-27-2006, 02:34 PM   #5
Gethin
Scooby Specialist
 
Member#: 2998
Join Date: Nov 2000
Chapter/Region: VIC
Location: BC
Vehicle:
2002 WRX
WRB

Default

This thread is also a good read

http://forums.nasioc.com/forums/show...gt+temperature

Lots of technical info there on temps. I'd say if temps reached 1600 then the ECU would complain to save the exhaust valves, uppipe CAT and hot side of the turbo. I'll keep on digging.
Gethin is offline   Reply With Quote
Old 02-27-2006, 02:42 PM   #6
subieworx
Scooby Guru
 
Member#: 47769
Join Date: Nov 2003
Chapter/Region: MWSOC
Default

I thought the ECU started to complain before that which is what I'm concerned with. If I do find a way to make my aftermarket sensor work I know it is going to see higher temps than the stock sensor would.
subieworx 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
Greddy EGT Sensor Same as Defi? Sap12687 Electrical & Lighting 2 11-05-2008 03:27 PM
Splitting the stock EGT sensor signal to both ECU and a aftermarket gauge Worxman02 Electrical & Lighting 9 01-15-2005 11:26 AM
02 wide-band sensor same as EGT? wrx05 Engine Management & Tuning 3 01-09-2005 10:41 PM
Stock Sti downpipe same as stock WRXs? rlim6 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 06-02-2004 05:44 PM
catless uppipe+stock egt sensor or aftermarket sensor? other q's AWDconvert Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 2 07-28-2003 08:48 AM

All times are GMT -4. The time now is 09:19 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.