mcv Posted March 18, 2021 Share Posted March 18, 2021 I am new to Subaru and have try'd various search's to try and identify this unit but with little success.Can any one please tell me what this unit is called and what is its purpose, my xv has a rather annoying squeak when touching the throttle pedal very lightly on and off, I have traced the squeak to this unit on the exhaust pipe but before attempting to remove itto see if I can stop the squeak I would very much like some information on it. Quote Link to comment Share on other sites More sharing options...
Jay762 Posted March 19, 2021 Share Posted March 19, 2021 Hi - looks like some form of power valve controller that changes the profile of the exhaust which removes flat spots inherent in NA engines? Quote Link to comment Share on other sites More sharing options...
Mr B Posted March 19, 2021 Share Posted March 19, 2021 exhaust back pressure control valve . 1 Quote Link to comment Share on other sites More sharing options...
mcv Posted March 19, 2021 Author Share Posted March 19, 2021 Thanks Mr B. I will remove unit and inspect as this is what I keep going to for the noise, hopefully a good clean out of the inside and flap will cure the noise. Quote Link to comment Share on other sites More sharing options...
Jay762 Posted March 22, 2021 Share Posted March 22, 2021 I would suggest getting some molyslip - high temp grease. This is the stuff I use to lube the same type of valve on my motor bike Quote Link to comment Share on other sites More sharing options...
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