Jimmy78 Posted April 15, 2010 Share Posted April 15, 2010 so my check engine came on..checked with acessport code was p1544..high exhasut temp..so i took the sensor out reflashed my cobb OTS map and the light was on..any help would b great. Link to comment Share on other sites More sharing options...
ktmrider Posted April 15, 2010 Share Posted April 15, 2010 Disconnect and do the resistor mod like STI UP folks do. Link to comment Share on other sites More sharing options...
Jimmy78 Posted April 16, 2010 Author Share Posted April 16, 2010 will tha work with the acessport...nd how do u do this mod been seaching but cant find anything Link to comment Share on other sites More sharing options...
SATSFYD Posted April 16, 2010 Share Posted April 16, 2010 You unplug your EGT and put the resistor in its steed. (Its one of the steps for gutting the uppipe.) **There are two types of people in the world, those who build horsepower and those who buy it. Which one are you? Link to comment Share on other sites More sharing options...
clarkwgriswold Posted April 16, 2010 Share Posted April 16, 2010 You need a 2200 ohm resistor and jump that across the two EGT sensor wires. You should also get an STI up or aftermarket up as mentioned before. Link to comment Share on other sites More sharing options...
Jimmy78 Posted April 17, 2010 Author Share Posted April 17, 2010 i have a aftermarket upipe... but how do u do it with a acessport? Link to comment Share on other sites More sharing options...
LGT Dave Posted April 17, 2010 Share Posted April 17, 2010 See here: http://legacygt.com/forums/showthread.php/unofficial-05-06-lgt-2-131488.html Link to comment Share on other sites More sharing options...
2006Specb122 Posted July 25, 2012 Share Posted July 25, 2012 I've read every thread and never saw a full explanation so I'll post my experience here. Back in 2006 I purchased a brand new Legacy Spec B. Soon after I went stage 2 with Cobb UPPIPE, Cobb Downpipe, Access Port and full Catback Exhaust (borla) Since the Inconel Cobb Uppipe had a port for my existing EGT sensor I used it. (probably a bad idea looking back) Several years later on a long trad trip my car went into limp mode. I had code P1544 (exhaust gas temperature high) I pulled off the road and tried resetting ECU with the access port. After an hour or so I finally was able to clear the code and get back on the road. Car was fine for a couple of years. More recently this same thing happened again. I tried the same steps as above and all was good. Then it happened again only a few weeks later. This time I was unable to clear the code. I pulled the egt sensor out of the harness in the engine bay and reset the ECU with the access port. I've been driving HARD for 200 miles and haven't seen the code or limp mode since. My guess is that since my Access Port tune deletes the CEL for missing EGT sensor that I don't need it plugged in. However, since I DID have it plugged in it was occasionally tripping up the ECU with a temperature too high reading (P1544). Anyone care to chime in and confirm this? Anyways, I think the problem was I never should have left the EGT sensor installed. I've just ordered a plug for the UPPIPE and hopefully that will be the end of it. I have NOT installed the resistor as I don' think I need to since the missing EGT sensor code has been removed with the "tune" However, I'll update this thread if the limp mode comes back and at that time I'll try the resistor if needed. Any thoughts appreciated. Link to comment Share on other sites More sharing options...
Max Capacity Posted July 25, 2012 Share Posted July 25, 2012 Yes, plug it and you should be good to go. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
mwiener2 Posted July 25, 2012 Share Posted July 25, 2012 Plug and install resistor My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
Max Capacity Posted July 25, 2012 Share Posted July 25, 2012 So Cobb AP stage 2 doesn't cancel that code ? The 2.2k ohm resistors come from radio shack, just ask the guy at the counter for a 2.2k ohm resistor. He'll do the rest. Package of 5 for a $1.25 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
mwiener2 Posted July 26, 2012 Share Posted July 26, 2012 In Open Source and COBB, when you delete a code, you delete the CODE, not the issue. When the ECU doesn't get a "happy" temp reading from the EGT, it can have delays switching from open loop to closed loop and vice versa. The 2.2kOhm resistor makes the ECU think the EGT's are in a happy place so you don't get the delay. My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
ssbtech Posted July 28, 2012 Share Posted July 28, 2012 So the EGT sensor is useless and doesn't provide any useful information? Link to comment Share on other sites More sharing options...
ehsnils Posted July 28, 2012 Share Posted July 28, 2012 The EGT sensor is in place to protect against burnt valves and overheated cat. A kind of last resort option if things goes wrong. But if you have mods on the car it may get incorrect reading, so just throw in a resistor. Link to comment Share on other sites More sharing options...
LosAngelesLGT Posted July 28, 2012 Share Posted July 28, 2012 I've read every thread and never saw a full explanation so I'll post my experience here. 2000 posts, bumping a 2 year old thread and can't find my walkthough? http://legacygt.com/forums/showthread.php/unofficial-05-06-lgt-2-2k-5w-resistor-up-pipe-131488.html?t=131488&highlight=2.2k+resistor+mod Link to comment Share on other sites More sharing options...
InnocentGuns Posted August 4, 2012 Share Posted August 4, 2012 2000 posts, bumping a 2 year old thread and can't find my walkthough? http://legacygt.com/forums/showthread.php/unofficial-05-06-lgt-2-2k-5w-resistor-up-pipe-131488.html?t=131488&highlight=2.2k+resistor+mod :lol:hahahahaha. Link to comment Share on other sites More sharing options...
LosAngelesLGT Posted August 5, 2012 Share Posted August 5, 2012 Well, I might not have said anything but you will notice that the post TWO YEARS BEFORE, the one RIGHT BEFORE THE BUMP by 06specb122 contains a LINK TO MY WALKTHROUGH. Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted August 8, 2012 Share Posted August 8, 2012 In Open Source and COBB, when you delete a code, you delete the CODE, not the issue. When the ECU doesn't get a "happy" temp reading from the EGT, it can have delays switching from open loop to closed loop and vice versa. The 2.2kOhm resistor makes the ECU think the EGT's are in a happy place so you don't get the delay. Do you know the temp. that the ECU switches between open loop & closed loop. About a year ago I forgot the resistor & don't live close to a Radio Shack. So on a Sunday I did this blow. The car runs fine, but is 698F hot enough for normal switch between open loop & closed loop Took the EGT out of the OEM catted UP pipe. And put it here. When I installed may GMS cat-less up pipe. see pic. Keep the temp at 698F & the ECU happy. http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/th_0920112055.jpg http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/th_0920112055a.jpg http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/th_0920112126.jpghttp://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/th_0920112057.jpg http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/th_0920112124.jpg http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/th_0920112123.jpg- Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
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