Couple of quick questions on BOV

[Speedie6]

I see Haltech give the unit a good review. Just a couple of quick questions:

1. I understand a couple of flanges, including Subby flanges are available. The flange I've got is Greddy. Is that the same, or is there a Greddy flange available?

2. Since it is designed to be used on different cars, I don't think all cars use the same 1 1/8" hose size we use. (Or whatever that is in metric...) But since Haltech didn't indicate any special hose requirements, I assume that means it has the same hose size as we use?

[durhamsr3407]

Are you talking about the recirculation piece or a flange? The flange the stock ms3/ms6 uses is this one





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[rfinkle2]

HKS flange won't work with this valve. The stock recirc hose will work with it.

[Speedie6]

Oh, crap, I'm a moron. I didn't mean HKS. I meant Greddy. I need Greedy compatible flange.

So, let me try again, does Cobb have a Greddy compatible flange? I've currently got a first-gen Street Unit dual-port BOV. I drilled extra holes in the flange to make it Greddy compatible. And the reason I have a Greddy flange is simply that is the most commonly available when buying a BOV flange pipe on ebay. So, hypothetically, I could do the same here, drill extra holes.

I'm not even sure I'm going to replace the SU unit. I have to at least replace the hose fitting on it. So, I figured I would at least have a look and see. I like that the Cobb is shorter than the unit I've got.

[rfinkle2]

Originally Posted by Speedie6 Oh, crap, I'm a moron. I didn't mean HKS. I meant Greddy. I need Greedy compatible flange. So, let me try again, does Cobb have a Greddy compatible flange? I've currently got a first-gen Street Unit dual-port BOV. I drilled extra holes in the flange to make it HKS compatible. And the reason I have a Greddy flange is simply that is the most commonly available when buying a BOV flange pipe on ebay. So, hypothetically, I could do the same here, drill extra holes. I'm not even sure I'm going to replace the SU unit. I have to at least replace the hose fitting on it. So, I figured I would at least have a look and see. I like that the Cobb is shorter than the unit I've got.

The Cobb BPV is Mazda / Subaru specific. I would guess you could drill the flange as you did on your Turbosmart / Street Unit BOV, as the flange dimensions on that BOV are the same as the Cobb.

[Speedie6]

I got the 90 degree fitting for my old SU BOV. The BOV is really still too tall, it still hits my hot pipe. But, now it is at least workable for the short term. But I guess I will soon need a shorter BOV so I'll probably soon go ahead and get the Cobb.

Anybody have the total height measurement of the unit?

Originally Posted by rfinkle2 The Cobb BPV is Mazda / Subaru specific.

Cobb also sells their BOV for the GTR. None of those are the same as Greddy? Just given how common the Greddy bolt pattern seems to be (just judging from the availability of BOV flange pipes on eBay) I would think that offering a Greddy bolt pattern flange would be useful. Having a single flange with multiple bolt holes would be convenient, though some might find that aesthetically unappealing.

[durhamsr3407]

Originally Posted by Speedie6 Oh, crap, I'm a moron. I didn't mean HKS. I meant Greddy. I need Greedy compatible flange. So, let me try again, does Cobb have a Greddy compatible flange? I've currently got a first-gen Street Unit dual-port BOV. I drilled extra holes in the flange to make it HKS compatible. And the reason I have a Greddy flange is simply that is the most commonly available when buying a BOV flange pipe on ebay. So, hypothetically, I could do the same here, drill extra holes. I'm not even sure I'm going to replace the SU unit. I have to at least replace the hose fitting on it. So, I figured I would at least have a look and see. I like that the Cobb is shorter than the unit I've got.

Im so lost right now....you still haz tmic yes? And want a greddy compatible flange?




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[Speedie6]

I decided to, at least for short term, just keep using my SU, and replace the hose fitting on it. I still might eventually get the Cobb. But, to clarify the questions:

Originally Posted by rfinkle2 The Cobb BPV is Mazda / Subaru specific.

I was just kinda guessing that maybe Subby was the same as Greddy. Particularly since so many BOV pipes on eBay are Greddy, I was thinking maybe some car manufacturers used the same dimensions.

Originally Posted by durhamsr3407 Im so lost right now....you still haz tmic yes? And want a greddy compatible flange?

No, I have a CPE FMIC, its in my signature. But, when I got the JMF manifold, the CPE flange pipe didn't really fit well with it. So I bought a flange pipe off eBay which had a Greddy flange. So, I drilled extra holes on the flange on my SU, which is really a Turbosmart as rfinkle2 said. But, I have a first gen SU unit, which has the hose fitting come straight out. And where I have my BOV located now, the hose fitting on it hits my hot pipe.

So, I considered either just replacing the fitting on it, or getting a new BOV. Haltech gave the Cobb unit a good review, so I figured I would at least consider it.

I went ahead and called SU today, and they had some of the 90 degree fittings on the shelf that they currently use, and sold it to me for $8 including shipping, so I went ahead and bought it.

I talked to a guy named Ryan. I'm sure he's a fine guy, just doing his job, but, with all the SU/SURE crap going on here, I couldn't help myself and poked him a bit and said, "I hear you are getting a lot of heat on Mazdaspeed Forums." He said, and I quote, "just some kids talking tough, we don't pay too much attention to that". LOL.

Like I said, I know he's just doing his job, so, I didn't press him. Since its really a Turbosmart unit, I'm sure its fine. It is on the large size, and the Cobb would give me more clearance. But, I'll just keep what I got for now.

[durhamsr3407]

What valve are you talking about all I see is hks lol

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[durhamsr3407]

Okay lol I wasnt sure for a second and I dont think its "some kids talking tough"

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