samcowrx |
23 December 2006 08:22 PM |
Strange sound alongside dump valve sound
Merry Christmas all.
I have a MY93 jdm wrx wagon (td04) and overall it does run very well, when letting off of the throttle at boost the dump valve does its whoosh (newish bailey) and along side it at about the same time as the whoosh there is another sound, that i can only describe as a humming?vibrating type noise, not loud, about the same volume as the dump valve, it doesnt always do it, only really when warm and after letting off from high boost, the car has a oe airbox and filter, decat downpipe, straight thru decat exhaust, and thats it really. I havent tried taking the dv off yet but i might try that tomorrow, as i suppose it could be that? Any ideas on this one please??
thanks.
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