Blow off valves for the new WRX

[JohnWad]

They look a lot like GoFastBits BOVs. The price listed is not a good as the GB that we got direct for the WRX specific BOV, not bad though.

* Registered users of the site do not see these ads.

[p7r4e7y]

i ordered one from alamo motorsports that is comming from turbo xs. i hope they send me the right one. they were finalizing insatll instructions on monday.

[[ /dev/null ]]

i ordered one from alamo motorsports that is comming from turbo xs. i hope they send me the right one. they were finalizing insatll instructions on monday.

why buy from Alamo? You should support the local subbie-specific tuners. Check out www.cobbtuning.com. Trey is a really nice guy and can help you with ALL of your WRX needs.

peace,
shawn

[This message has been edited by [ /dev/null ] (edited April 24, 2001).]

[Bob Cant]

I am going to order mine from Stratmosphere

[Leonardo]

I hope that the Cobb page is updated soon with WRX info and prices.

Leo

[Opie]

Check them out here .

[Adrian128]

Man.. those look like the Turbosmart BOVs that we have here in Australia. Maybe they have a different name in North America. If they are they are cheap POS. I mean.. how many BOV give a loud psssssshhh sound when lifting off at 2500 rpm?

Turbosmart

[This message has been edited by Adrian128 (edited April 25, 2001).]

[harrydog]

OK, some dumb questions are in order. All this talk of BOV's, but what I'm not hearing is what results anyone is getting from installing one. I would assume the main reason is to keep the turbo spooled up between shifts when you're off the throttle? Is there any other another reason for installing one?
Can you vent to the atmosphere or do you need to keep it a closed system?
I'd really like to hear some firsthand impressions on how much this will improve things. Can you actually feel a seat of the pants difference?

[p7r4e7y]

I hope that the Cobb page is updated soon with WRX info and prices.

this is why. as far as other stuff (new turbo) ill see trey.

[GRWRX]

I feel the same as harrydog. What gains are had with an aftermarker BOV? If anyone has one installed, what's your experience?

George

[Darryl]

I owne a ZEN bov. As far as what a bov does, there has been some debate. What I understand is that they vent excess pressure when you let off the throttle. Some people, like me, like the sound they make when vented to the atmosphere. Supposedly venting in this way helps reduce spool time when thrttle is reapplied. Maybe it prevents compressor stall? Some people have the vents routed back into the air stream between the turbo, and the throttlebody.
I can tell you that venting to the atmosphere seemed to allow boost to build more quickly. But, since I was venting pressurized air, maybe that's not so good, in hindsight. Once the throttle is reopened, that pressurized air can be put to work as "boosted air" that's already available, rather than having to build more boost from a lower pressure level. If the bov is on the outlet side of the intercooler, that might mean that cooled charged air is rerouted to the intercooler inlet, thus lessening the work load on that unit. My unit was mounted before the inlet unit, and one could feel the heated air at the bov vent when it opened up.
IN SUMMATION: I probably won't get an aftermarket bov unless it's mounted on the intercooler outlet, and only then if it replaces the stock unit (if that unit is mounted on the inlet side of the intercooler). I ould then not vent that cooled charge to the atmosphere. I think bovs can be "hype" acessories if they mount on the inlet side. Here's another observation. If the bov is mounted on the outlet side, there would be a nice adiabatic effect for the intercooler. This means that a pressure drop is attended by a temperature drop (why cold beverages freeze, if close enough to freezing temperature)when opened. This means the intercooler would drop a few degrees in temperature, and so become a bit more efficient in cooling the next boost charge. That's how I see it. I used to work as a plant operator in a liquid nitrogen plant, and I know just a few psi pressure drop can drop the temperature of a liquid enough to have a desired effect.
sorry to be long. Anyone else know if bovs are hpe gadgets, or useful aftermarket tools?
darryl

[Darryl]

by the way, I did a couple of searches: "what blowoff valves do", blowoff valve". interesting info, still no definitive. [url=http://www.audiworld.com/bbs/a4/984/messages/1472.shtml]

[GDA]

I am using a Hybrid BOV from GFB in Australia.

The unit is of the highest quality and finish. This unit blows back into the stock system as well as to the atmosphere.

This BOV has the option of running full open atmosphere when the time is right or when the user chooses to do so.

Besides the "cool" sound, although not as loud as some of the japanese BOV's, i notice under hard acceleration there is better response from the car.

The GFB hybrid was a direct bolt on affair, and was purchased from www.mrtrally.com.au for $175 USD plus shipping. I would strongly suggest people ordering some other stuff to making shipping worth while. I under up getting the BRAKE MASTER CYLINDER SUPPORT, and a set of DBA XDRILLED and SLOTTED rotors, same ones that ISR sells on their site.

I am very happy with my products. There website has a whole bunch of stuff so look carefully and try to make on large order (not physically).

So far there has been no negative feedback from the car after BOV installation, as far as full open atmosphere is concerned i have no idea.

EJ20WRX

[[ /dev/null ]]

this is why. as far as other stuff (new turbo) ill see trey.

Trey is a REALLY busy guy, even though he doesnt have updated prices on his webpage does not mean he does not have the parts. Just give him a call.

peace

[blkwag]

EJ20WRX,

I just ordered the same one as you from Irvine Subaru but also talked to Marcus at MRT. He stated that gas mileage was poor if you run full atmosphere. Have you tried running full atmosphere yet? I'm curious as to how poor the gas mileage gets.