"The BIG BOV thread" (Where all bov question threads get merged)

[eclypsecl]

nm i see what it is, but would i have to re map ecu with boost controller to operate safely? etc..what performance diff will I see with a diff up/down pipe?

[fastwrx135]

If you ARE planning on upgrading your turbo, don't bother with a boost controller, just save your money for some sort of engine management later. If you DON'T plan on upgrading the turbo, then boost controller is fine. You will not have to remap anything. Just don't set it too high, maybe 15.5psi at the most.

A catless uppipe and downpipe will give some pretty big hp gains. Im not sure what the exact numbers are but i believe it too be 40-50 crank hp. You will get faster spool of the turbo and better top end. In my opinion, go with an uppipe first, followed by downpipe then some sort of catback(HKS, Greddy are my preferred choices) You don't want to put a Boost Controller until you change the uppipe. If you raise boost, it will melt the cat on the uppipe and shoot pieces of the cat in your turbo which is bad.

If im wrong in anyway here, please someone correct me.
Hope this helps

adam

[WorldONE]

ITs an HKS SSQ BOV


Final Answer...

[Mili727]

Originally posted by WorldONE
ITs an HKS SSQ BOV


Final Answer...

THANK-YOU.

Now do you believe me?

[Verdugo]

Ummmmm yeah it's an HKS...not that it was already confirmed by my two NW bretheren already

[ebr0t]

I stand corrected. I apoligize to all that I have offended.

[the mike]

I was just wondering if the STi and the "plain" WRX use the same BOV. My girl saw an STi the other day and said it had more whistle to it. I dismissed it as aftermarket, but while I was standing on the dealers lot waiting for warranty work, I heard an STi go by. It too had a destinct whistle to it.
Also, will the STi BOV fit on my EJ20? Hmmmmm...


mike

[PlatinumWRX]

They are NOT the same internally. The STi BOV holds more boost. The fitment is the same, however.

-Jim

[the mike]

Thanks Jim. So theoretically it will fit? Not that i'm going to be replacing it anytime soon, I was curious about the sound.

How's scenic Runnemede?

mike

[renichms]

Fitment is the same as normal WRX. Also if you listen REALLY closely you can hear it, even though it's recirculating. I heard that if you swap stuff like the intake you can hear them more clearly too. It's also an easy swap, so aftermarket BOVs should be common...

RN

[PlatinumWRX]

Originally posted by the mike
Thanks Jim. So theoretically it will fit? Not that i'm going to be replacing it anytime soon, I was curious about the sound.

How's scenic Runnemede?

mike

Yes, fitment IS the same.

Runnemede sucks. The speed limits are too low, the traffic is horrible and I constantly worry about my car in the parking lot of my apartment complex.

-Jim

[silversti]

Easy project. Sounds great with the SUS

[04EJ25]

Looking good Matt... Love the details...

[sanee515]

im selling my rsx type s to get a wrx because i love AWD turbo!! but had one question in mind. I plan to get cat back exhaust, and blow off valve as one of my first mods. are their any performance gains to a bov? and i heard u run slightly rich with bov and thus have carbon buildup...is that true?? and wuts the 50/50...like half atmospheric and half recirculate? someone please help me. i am a soon to be a fellow WRX owner

[Mili727]

Originally posted by sanee515
im selling my rsx type s to get a wrx because i love AWD turbo!! but had one question in mind. I plan to get cat back exhaust, and blow off valve as one of my first mods. are their any performance gains to a bov? and i heard u run slightly rich with bov and thus have carbon buildup...is that true?? and wuts the 50/50...like half atmospheric and half recirculate? someone please help me. i am a soon to be a fellow WRX owner

BOV yields no performance gains. Yes you run rich. Yes 50/50 is half reciruculative and half atomspheric.

You would be better off getting a downpipe/uppipe and your first mods.