Hi I have a 2003 wrx prodrive upgrade
It has a forge dump vale fitted but doesn't seem to give out much noise easily ?
I need to floor the car and hit about 4-4500 rpm before I get any noise and then it's not loads I've seen a lot of subarus around my area that seems they just need to excellarate normally then when changing up gets that dumping noise I've fitted boost gauge ang I'm boosting 15-17 psi do anyone know if this is normal or is there a problem somewhere ?? Thank in advance for any tips

 

Wait for it, I'm sure a few people will help u out on ths matter ! Lol but don't take it to seriously all fun and games on this site u no ...

Just outta intrest what dv are u running ?

 

Oop just seen its a forge !!!

 

Sounds like u need to buy a spring kit from either import car parts or direct from forge uk, u need to remove the dv open it and see what colour spring is inside, the spring kit consistes of 4 coloured springs ( hard to soft ) u may just need a slightly weaker spring to the one currently fitted

 

You may (wisely) have a Forge recirculating dump valve fitted. I say "wisely" because the Impreza engine runs better with a recirc valve than the VTA ones.

The loud ones are VTA....they can, and do, spoil the running, waste fuel and can lead to damage to the engine and cats.

You could always lean out of the window on gearchanges and shout, "PSSSSSHHHHH! Look at ME everyone!" LOL

Or perhaps not?

 

Thanks will open it up have look what spring inside ? Lol yeah always liked to be noticed since kid lol I may get one of those recorded noise ones lol seen a young boy with s reg corsa the other day that had the dump valve noise lol made me chuckle

 

Perhaps not

 

But surely it doesn't make you look any MORE of a prat?
LOL

 

Just love these dump valve threads

 

check your fake roof vent, this may be the issue.

 

Got a HKS SSQV here chap if you want something with a bit more volume. Drop me a Pm if your interested.

 

corsa crew is that the look and feel your looking for in your subaru?