Hi just reposting this as have bit more info, if anyone can help !!! ??? ive just replaced my vta dump valve on my bugeye 2001 wrx, its not dumping at all now, ive regreased it, but since removing the pipe going to the valve noticed on idle or revving hard its permantly sucking, shouldnt it not wen not revving ? any ideas about why wont dump ??

 

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