dump valve
22 June 2007, 09:50 PM
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dump valve
im looking to buy a dump/blow off valve but not sure which can anyone recomend any and places to buy im looking not to spend much over 150
23 June 2007, 06:10 AM
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I guess the important question is WHY, do you want the noise (from a VTA), is yours leaking or do you want a 'better' one.
Also depends which model you have and whether its flange mounted or not.
The only cheap ones worth bothering with are cast off Subaru OE ones - personally I prefer the stock Impreza one I have now to the (badly calibrated from them, then charge you another £15 to give you the bits to correct the mistake) Forge one I had.
Simon.
Simon
Also depends which model you have and whether its flange mounted or not.
The only cheap ones worth bothering with are cast off Subaru OE ones - personally I prefer the stock Impreza one I have now to the (badly calibrated from them, then charge you another £15 to give you the bits to correct the mistake) Forge one I had.
Simon.
Simon
23 June 2007, 06:36 AM
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Look at the Item number: 290131044086 on flbay maybe?
They are ment to be good and looks like a good price?!
Needs a good clean dou but he say's hell do it before sending???
They are ment to be good and looks like a good price?!
Needs a good clean dou but he say's hell do it before sending???
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24 June 2007, 01:51 PM
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2000 Foz needs the flange mount similar to he baileys one in the pic, but with the 3 holes (2 bolt and the vent) in a line unlike this one where the bolt holes are offset.
Be cautious changing DV's on a foz the EU (not JDM) ones with the smaller turbo are boosting much more often so the on off characteristics as the valve opens and shuts can be quite unpleasent. I had a Forge on mine and couldn't do an 80mph cruise as whenever the valve opened or shut it gave a 12% change in manifold pressure (and hence torque), I could have got a Forge 'tuning' kit (different springs etc) but was loath to pay yet more money, so went back to a cast off Impreza one.
The stock Foz DV is very prone to leaking, you need to remove the vac line that goes to it thats nearest the intercooler (and plug it!) so it shuts and holds boost properly, especially if your increasing the boost level. If you pm me an email addy I can send you a very useful document written by an Austarlian on tuning the Forester engine (and car!) with the TF035 blower.
Simon
Be cautious changing DV's on a foz the EU (not JDM) ones with the smaller turbo are boosting much more often so the on off characteristics as the valve opens and shuts can be quite unpleasent. I had a Forge on mine and couldn't do an 80mph cruise as whenever the valve opened or shut it gave a 12% change in manifold pressure (and hence torque), I could have got a Forge 'tuning' kit (different springs etc) but was loath to pay yet more money, so went back to a cast off Impreza one.
The stock Foz DV is very prone to leaking, you need to remove the vac line that goes to it thats nearest the intercooler (and plug it!) so it shuts and holds boost properly, especially if your increasing the boost level. If you pm me an email addy I can send you a very useful document written by an Austarlian on tuning the Forester engine (and car!) with the TF035 blower.
Simon
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