jude123412 Posted April 4, 2021 Share Posted April 4, 2021 ok so my brother has a subaru impreza wrx sti 2008 hawkeye and he has just fitted a blanking plate on the dump valve recurculator to see if it makes turbo flutter noises but in stead it causes a backfire on de-acceleration? anyone know why this is and have a fix for it? Quote Link to comment Share on other sites More sharing options...
damien e Posted April 4, 2021 Share Posted April 4, 2021 did he remap it afterwards Quote Link to comment Share on other sites More sharing options...
jude123412 Posted April 4, 2021 Author Share Posted April 4, 2021 nah i think he is planning on it Quote Link to comment Share on other sites More sharing options...
damien e Posted April 4, 2021 Share Posted April 4, 2021 33 minutes ago, jude123412 said: nah i think he is planning on it to me the ecu is getting confused, you are meant to remap it when fitting a dump valve, some guy did a video of him putting dump valve on and it was running rough. Quote Link to comment Share on other sites More sharing options...
SF5Fozzi Posted April 4, 2021 Share Posted April 4, 2021 8 hours ago, jude123412 said: ok so my brother has a subaru impreza wrx sti 2008 hawkeye and he has just fitted a blanking plate on the dump valve recurculator to see if it makes turbo flutter noises but in stead it causes a backfire on de-acceleration? anyone know why this is and have a fix for it? I presume the blanking plate has been put in the turbo inlet pipe?, With the valve's recirculating rubber hose now acting as a vta?. If that's what you've done then u can't vta with a maf, it has to be speed density tuned.👍🏻 1 Quote Link to comment Share on other sites More sharing options...
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