on my02wrx I have fit a forge atmo dump valve but it does not make a noise apart from a quite constant hiss when u lift the bonnet - any ideas

 

have you got it fitted as per the pics on the link below..

http://www.scoobyparts.com/html/performance.html

Dan

 

well those pics don't seem to show allot but it looks the same

 

do you know what colour spring you have in the dump valve...?

 

just opened it up, it has a blue spring

 

that should be ok then, mine runs with blue ive also tried a red one and it doesnt dump at low revs so maybe its faulty, or incorectly fitted

 

Cheers, Im sure it it fit correctly, but I will email forge and see what they say

 

can u move the piston by hand when its off the car...?

 

yes I can - u can push it in wih your thumb

 

Just got a replacment from forge - these guys seem good replacemnt was on the door step next morning, This one seems to be working but does not seem to sound all the time, after about 3000 revs when going for it it will blow off with out fail but when Im round town it seems reluctent to blow, Some times even over 3000 revs, I am running it on the yellow spring, If I sit stationnairy and rev the engine it does not make any noice regardless of revs - should I return the dam thing and get my money back, forge say its a option

 

thats normal