Ive recently upgraded my IC to a FMIC and ive only had this noise since then.
Anyhoo as im approaching neutral / positive boost and i let off i hear a patter from my Dump valve like its letting off intermittently but in rapid succession ..its hard to explain the noise but im not sure why its doing it, i have the HKS SSQ DV could it possibly be going down the drain?
cheers
John
sounds normal
the valve opens, then pressure is - so closes again, the pressure builds back up so opens, then down etc...
neh, i cant be explaining myself properly. The valve seems to sounds and open before positive pressure has been achieved if i let off early. Its not a single SWOOOSH noise like normal its more of a ppshh ppshh ppshh ppshh..
im sitting here trying to vocally recreate the noises and trying to put in to words and it isnt working well...
And yes i do sound like a
(http://www.knowsley.com/safari/images/mizzy%20lake/COCKREL-FARM.gif):Giggle
if its sounds like a horse blowing thru its nostrils then its the dump valve not opening properly and the air flowing back over the turbo
i had that noise changed my dumpvalve seems to have gone all i can now here is my bloody manifold blowin lol