Hi everyone whats the best for the money blow off valve for a STI TYPE RA i had a GTIR before my impreza i had a HKs one on that i was just woundering witch one is the best for the money? and what every one else is using? gav

 

Standard one works just fine - do a search you will find many pages of light banter on dump valves

HKS still seems to be about the best rated of the VTA's
Forge recirc if you wanted to replace with another recirc one.

Uprated K&N/Green panel filter also works just fine in case your next question is about induction kits

 

hks all the way sounds great 2 but not cheap but you get what you pay 4 baileys was ok on my gt4 celica sounded great 2

 

yeah think hks are about the best, but there around £300 ish

 

HKS all the way, they're ina sound of they own. They are pricey. Shop around a bit as they do vary for £200 to £300 dependant on where you get them from. Ebays a good place but steer clear of HKS type or HKS look dump valves, as they are nearly all fakes, and there's plenty of them about and they are no where near as good. My mate bought one and found out the hard way.

 

A 'whooshy' dump valve will make your car very jerky on/off throttle, run rich, cause bore wash and sound very, very gay.
Don't do it!

 

Try and get hold of a Greddy type s BOV,they are discontinued but can be found in some places

sound they give off is very unique

Video - VW GTI 1.8t, APR CHIP, GREDDY FMIC, Turbo Back Exhaust, Greddy type s bov

 

Pretty much had them all..................and the car ran best with the standard or uprated recirculating one on.

 

Mine isn't at all jerky with a Baileys fitted - still might get rid of it some day :
previous owners idea !

 

if anyone is interested i have access to a copy HKS SSQV very similar in performance and appearance but without the hefty price. U.S $120. price doesnot include shippings.

 

A turbo'd car needs a dump valve, blow off valve whatever you want to call them. The question is do you want the sound or not?

In my opinion I like the sound. I have a HKS and I've never had a problem with it. During general briving you don't notice it, but with a little more peddle it sounds great. So it doesn't get on you nerves unless you're booting it around all the time.

For a dump valve that makes a noise (atmosphic) go with HKS, Greddy, Blizt etc all the main makes are the same they just produce a different sound.

There is no extra performance gains, and only very very slightly affect turbo spool up.

If you choose to stick with the recircualting type, without the noise, I've never seen much point in upgrading to a different type other than standard unless your exsisting one is broke.

 

I have a blitz super sound BOV for sale. Was £280 new,10 months old will sell for £120 incl postage.

 

what year of subaru is it for?

 

We're all (well most of us anyway) using the standard recirc dump valve. It works just fine.

When air enters the engine it has been metered by the MAF in order for the ECU to provide the appropriate amount of fuel. By using a VTA dump valve you will vent that metered air. Therefore the fuel that has been provided won't get burnt and will end up running down into your sump - known as bore wash.

 

APS Twin Vent.

Set to recirc to around 80% boost, and vent to air at 80+% boost.

 

oem valve is the best one of all

 

That sounds absolute ****e..!

A bit like an extremely wheezy asthmatic running the marathon with a rucksack full of nuts and bolts on his back..

Do yourself a favour and stay with the oem recirc..