jude123412 0 Posted April 4 Report Share Posted April 4 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 post Share on other sites
damien e 1 Posted April 4 Report Share Posted April 4 did he remap it afterwards Quote Link to post Share on other sites
jude123412 0 Posted April 4 Author Report Share Posted April 4 nah i think he is planning on it Quote Link to post Share on other sites
damien e 1 Posted April 4 Report Share Posted April 4 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 post Share on other sites
SF5Fozzi 32 Posted April 4 Report Share Posted April 4 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 post Share on other sites
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