dump valve
11 March 2011, 11:31 AM
#3
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Great, something that makes a stupid noise and makes your car run worse! 
Just stick the original back on there ans save the cash.
Just stick the original back on there ans save the cash.
11 March 2011, 11:58 AM
#4
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Mine had a dump valve when I bought it, couldnt wait to get it off. Took me a couple of weeks to source a re-circ valve, the difference was amazing, better idle, smoother throttle response and quicker spool up!
Impreza's don't like vent to atmoshere dump valves, and neither do most netters!!
Impreza's don't like vent to atmoshere dump valves, and neither do most netters!!
Last edited by V555MAC; 11 March 2011 at 12:14 PM.
11 March 2011, 12:01 PM
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Mine had a dump valve when I bought it, couldnt wait to get it off. Took me a couple of weeks to source a re-circ valve, the difference was amazing, better idle, smoother throttle response and quicker spool up!
Impreza's don't like dump valves, and neither do most netters!!
Impreza's don't like dump valves, and neither do most netters!!
Recirulating ones are fine!
11 March 2011, 03:31 PM
#7
sorry to hijack the thread, but what about dual port BOV's that vent some of the air back into the induction systems? any good? or ar ethey just as bad as the dump to atmosphere type?
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11 March 2011, 04:22 PM
#9
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Frankly I like the chirp noise - although I think the grown up term for it is compressor surge.
Where the dumped air has no where to go so go back over the turbo blades making the cutting/chirping noise.
Cheapest option would be an induction kit and just blank off the dump valve altogether.
My MY00 RA had a K&N filter (not wise but it was on it when I bought it) and I had a forge re-circ dump valve that was set with springs to open when my foot was planted and lots of pressure. When the pressure wasn't enough to open the valve it went back over turbo blades and made the chirp noise.
I like the chirp (I secretly like the dump noise too but then chavvy looking girls turn me on so what can I say?)
Where the dumped air has no where to go so go back over the turbo blades making the cutting/chirping noise.
Cheapest option would be an induction kit and just blank off the dump valve altogether.
My MY00 RA had a K&N filter (not wise but it was on it when I bought it) and I had a forge re-circ dump valve that was set with springs to open when my foot was planted and lots of pressure. When the pressure wasn't enough to open the valve it went back over turbo blades and made the chirp noise.
I like the chirp (I secretly like the dump noise too but then chavvy looking girls turn me on so what can I say?)
11 March 2011, 04:49 PM
#10
not all turbos will survive blanking off the DV though.
the reason i mentioned the dualport BOV's was that on low boost it will recirc and you would only get the atmospheric dump when your realy going for it, and thats probably when the turbo would benefit from a dump anyway
the reason i mentioned the dualport BOV's was that on low boost it will recirc and you would only get the atmospheric dump when your realy going for it, and thats probably when the turbo would benefit from a dump anyway
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