i have a standard 04 WRX but want to start upgrading. what type of dump valve should i get? i am about to buy a de-cat pipe and louder back box although nothing too loud. any replies welcome.

 

Don't bother, a DV is not an upgrade. Leave it as Subaru intended. Spend your money on a good panel filter instead.

 

Personally I would not put a dump valve on a Scoob. Stick with the recirc valve and it will save you problems in the long run. As for exhaust I have a Magnex system, its deep but not too loud. Try and listen to a few as they vary a great deal in db levels.

 

i have 54 wrx
got bailys dv on it sounds nice and cost 129
if you thinkin of de cat then think of re map
got mine de catted and typhoon induction kit with re map now running 278bhp all carried out by scooby clinic
any other questions please ask as i will try my best to answer
cheers

 

why do dv cause probs??????

 

This is from experience of issues involving dump valves. It is regarded by many, including mappers on here, that the standard recirc valve is by far the most reliable and best item to use. There is no performance to be gained by dumping to atmosphere. Fitting a good panel filter as suggested will give you a whoosh sound while changing gear and not be annoying. Dump valves suit certain cars and IMO Subaru's aren't one of them. I am sure others will agree.

 

but they dont do any harm????

 

They don't do any good either. Total waste of money.....unless you want to sound like a right plonker.

 

Dont do it read my threads. I had a Forge and i just had to pay £500 for subaru to tell me it is causing over fueling. DV sound good if your in to that but aren't as good as standard recirc valve.

 

PS ninja 2 back box is good from scoobyworld and i now have votex afterburner which is v. good though its louder.

 

think ill take mine off then

 

If you fit the correct valve all will be fine ,the sound is a personal choice , some like it some dont , like marmite really