Which BOV for '05 STi???

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Aug 11, 2004 | 07:08 PM

#31

razorlab

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I added more to my post above, please check it out. I think you're confusing things. An aftermarket BOV can close faster between shifts because of stiffer springs, thus helping boost *response* between shifts. It has nothing to do with it adding more air into the intake manifold between shifts.

Last edited by razorlab; Aug 11, 2004 at 07:13 PM.

Aug 11, 2004 | 07:11 PM

#32

whoosh

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yes you are right, that is what i said from the start, but along with spring adjustment, the choice of venting to the atmosphere or back to the car is also available

Last edited by whoosh; Aug 11, 2004 at 07:18 PM.

Aug 24, 2004 | 10:15 AM

#33

Me&STi

Registered User

Joined: Aug 2004

Posts: 150

Quote:

Originally Posted by sebring vetran

BAN,
You can also just remove the silencer in the fender and then you can hear the factory valve quite well.

I've heard of this couple of times, but I've never heard of any gain...except the sound. Will this give you more power? Or just more audible sound?

Aug 24, 2004 | 11:00 AM

#34

Kevin M

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Joined: Nov 2002

Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

Quote:

Originally Posted by Me&STi

I've heard of this couple of times, but I've never heard of any gain...except the sound. Will this give you more power? Or just more audible sound?

It's been debated but never really proven. What is proven is that you can put over 250 hp to the wheels through the stock airbox.

Aug 25, 2004 | 04:40 PM

#35

silver satin

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Posts: 3,298

Car Info: 2004 Subaru STI/WRX Silver of course

Hey whoosh, if you can show me a dyno plot where a car gained something from a BOV I'll put one back on my STI...All the Blitz did for my car was make it hesatate and stall and some sound thats it, car ran worse and yes I tried adjusting the spring...Honestly unless your running more boost than the stock BOV can handle the stock one works perfect. I was running almost 18lbs on a stock BOV in a GSX Eclipse I had.

Aug 25, 2004 | 10:22 PM

#36

J-REX

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yeah silver i concur. my blitz just made the car run overly rich and made a nice psshht noise every time I lifted. I believe the car runs a lot better on the stock BOV on my 04 STI.

Aug 26, 2004 | 05:59 PM

#37

whoosh

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im running 18 lbs of boost with an eccutek reflash among a host of other mods, i never said anything about a horsepower gain, lol no , but i can tell you that my turbo response is much better after shifts, oh and yes i use a gfb stealth which can be vented both to the atmosphere or back to the engine and you can adjust the piston, im not sure if your blitz was adjustable, but everyone knows that a pure non adjustable atmospheric bov will make your car rich and even blow out flames