05subileggygt Posted August 13, 2014 Share Posted August 13, 2014 So I just purchased a stock catless up pipe from a sti for my 05 legacy gt. I was wondering if there a sensor in the stock one? Basically if I throw this catless one In will a throw a check engine light? Or will it have no issues Link to comment Share on other sites More sharing options...
chrish8r Posted August 29, 2014 Share Posted August 29, 2014 The stock legacy gt up pipe has a cat and has and EGT sensor to monitor the cat. Follow the link bellow to learn how to "trick" the car into thinking the EGT sensor is still taking readings. http://legacygt.com/forums/showthread.php/unofficial-05-06-lgt-2-2k-5w-resistor-up-pipe-131488.html Link to comment Share on other sites More sharing options...
JoeyKam Posted August 29, 2014 Share Posted August 29, 2014 You are running a egt sensor in that up pipe but it can be deleted with a tune. Link to comment Share on other sites More sharing options...
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