Forge stock replacement BPV

[4drboost]

I was wondering if anyone has used the stock replacement diverter valve from Forge. I dont want anything awsome, just a quality valve that dosnt leak boost like my stock one, its not holding boost very well. Is it worth the money? Will it leak under partial throttle???

[sickspeed94]

from what i hear it's like putting an atmospheric BOV on... i have a turboXS H25 and it does the same turkey crap the stock one does so i dunno, i guess my suggestion is get hardpipes and relocate the MAF so you can gain drivability AND blow off atmospheric without problems.

[4drboost]

I dont know, im not sure if my stock one is holding boost or if I have a whole nother problem. In first gear, ill hit 10psi, then second sometimes 10, maby 8, and third it goes down to 7, than fourth gear it goes back to 10 again. Do you think its the stock bypass valve? Or maybe I have a bad boost controller? Im using a manual made by a local performance shop in the area.

[jeffmsp]

i think its the boost controller and /or a restrictive exhaust system. I have tried 5 mbcs and none have worked as advertised in my car, fine in others. do you still have a cat?

[sickspeed94]

i've ben having that problem all night with my dual stage... i've been tuning it for like 2 1/2 hours and on stock boost setting everything is fine, but on upped boost setting it goes to like 20 PSi and it never did that before when i had it in... so fawk man i'm racking my brain

[4drboost]

No, both cats have been removed. The rest of the exhaust is still stock. Maybe its just the nature of the MSP (shrug)

[lancebav]

i have the forge valve and it works fine!! no leaking at all...but like above i would relocate the Maf and slap a bov on that bitch!!!! alot better performance! but if thats not for you the forge valve works just fine

[orlandomsp]

i have the forge valve and it works fine!! no leaking at all...but like above i would relocate the Maf and slap a bov on that bitch!!!! alot better performance! but if thats not for you the forge valve works just fine

Do you still get turkey, or are you running a dual setup?

[Rawyzf]

I have the forge BPV, feel free to stop by and check it out any time. No probs with it at all.

[4drboost]

I have the forge BPV, feel free to stop by and check it out any time. No probs with it at all.
yea, that would be cool man. Is there any better driveability with it at all? Better throttle response, less lag or anything like that?

[Rawyzf]

yea, that would be cool man. Is there any better driveability with it at all? Better throttle response, less lag or anything like that?

It's pretty similar to stock. I didn't notice any gains from it at all. It looks a lot better at least though :).

[Psyklops]

Any stalling issues with the Forge, Rawyzf? Sorry to revive an old post but I'm thinking about the Forge.

[Rawyzf]

Hey...no Prob.

The Forge BPV has no issues.

I don't know about the Forge BOV though, as I don't run that.

I don't know if that is what you meant or not, just wanted to throw it out there just incase.

-Ryan


Any stalling issues with the Forge, Rawyzf? Sorry to revive an old post but I'm thinking about the Forge.

[UnNaturalinc]

I sell those Forge products here... I was considering doing a group buy/sale.

Let me know if you're interested and I'll work something out.

[msp35]

ummmm, yes please.

[FlyinMSP]

I've ordered a Bailey dual-piston BOV (just to be different ;) )
We'll see how ti works

http://www.baileymotorsport.co.uk/baileymotorsport/1.html

http://www.msport.co.uk/acatalog/dv26%20grouped.jpg

[RenzoMSP]

Hey...no Prob.

The Forge BPV has no issues.

I don't know about the Forge BOV though, as I don't run that.

I don't know if that is what you meant or not, just wanted to throw it out there just incase.

-Ryan
The Forge bov is ok. Stalling issues suck though.

[sickspeed94]

plus th fact tahat the motor is reading air that it's not getting... the stalling is a riching out from having too much fuel due to how much air os coming in, and not enough air after it's blown atmospheric as opposed to being redirected back in

[Psyklops]

So I guess in the end the dual bpv/bov setup is really the only way to go to stop surge and prevent stalling. I would consider using the Forge bov in a dual setup - they seem stealthy quiet and look cool too. However, from what I've read they can only really be tuned using new springs (and maybe a washer or two for fine tuning). Am I right about that?

Those Bailey ones look pretty cool too - haven't heard of them before.

[UnNaturalinc]

So I guess in the end the dual bpv/bov setup is really the only way to go to stop surge and prevent stalling. I would consider using the Forge bov in a dual setup - they seem stealthy quiet and look cool too. However, from what I've read they can only really be tuned using new springs (and maybe a washer or two for fine tuning). Am I right about that?



Why would you need to upgrade the BPV if you're running a secondary BOV?

[Psyklops]

Why would you need to upgrade the BPV if you're running a secondary BOV?

I was planning on using the stock bpv and buying the Forge bov.

[Spooled]

I see Bailey has a recirc valve, too. That could be another alternative. It looks nice.

[UnNaturalinc]

You can re-circ. HKS and GReddy also. There's many options for re-circ'ing.

[FlyinMSP]

Another alternative is an hybrid valve. The only one I know of is the one from this Australian company GFB:

GFB Hybrid (http://www.gfb.com.au/index.php?parentid=products&option=products&sub_option=bovs&sub_sub_option=hybrid)

But it's a bit pricey, 319 AUD = 232 USD (still....)

btw, they just cancelled my order for the Bailey as the shop can't ship outside the UK, so I'm still looking....

[UnNaturalinc]

Another alternative is an hybrid valve. The only one I know of is the one from this Australian company GFB:

GFB Hybrid (http://www.gfb.com.au/index.php?parentid=products&option=products&sub_option=bovs&sub_sub_option=hybrid)

But it's a bit pricey, 319 AUD = 232 USD (still....)

btw, they just cancelled my order for the Bailey as the shop can't ship outside the UK, so I'm still looking....

Yeah, I've looked into GFB in the past for this part....

I think the easiest option with the MSP is just to retain the stock BPV and add a secondary BOV. No plugging at that point, just installed the BOV like you would any car.

[Spooled]

That hybrid is pretty cool, although I still do't like the idea of dual setups. Just because you don't stall doesn't mean that you aren't flooding the cylinders. I'm a firm believer in either moving the MAF, using a MAP, or recirculating 100%.

Either way, that hybrid is probably ideal for people that just want the BOV sound without stalling. It's cool that you can adjust it. Too bad it's big $$$.

[Psyklops]

That hybrid is pretty cool, although I still do't like the idea of dual setups. Just because you don't stall doesn't mean that you aren't flooding the cylinders. I'm a firm believer in either moving the MAF, using a MAP, or recirculating 100%.

Either way, that hybrid is probably ideal for people that just want the BOV sound without stalling. It's cool that you can adjust it. Too bad it's big $$$.

Those GFB Hybrids sound like the perfect solution to our problem (remove turkey and prevent stalling). However, isn't running a bpv/bov combination pretty much the same thing in the end? Also, I understand it's better to have the bov closer to the throttle body for two reasons: 1) it is the furthest point away from the MAF therefore will affect air readings the least, 2) the closing of the throttle body after boost (i.e., shifting) is what causes the surge. Anyway, that is what I've read, although you raise a good point Spooled, how do we know what is going inside the motor with air/fuel mixture in a bpv/bov combination?

I know 505Zoom has run many combinations of bpv/bov and he is currently running a dual bpv setup so that he is recirculating 100%. What the advantage of a dual bpv setup is I don't know.

[FlyinMSP]

Maybe I'll just end up with the MAF relocated on the pressure side and a BOV on the hot pipe (Turbo - IC) and call it a day!

[spacemonkey]

I was wondering if anyone has used the stock replacement diverter valve from Forge. I dont want anything awsome, just a quality valve that dosnt leak boost like my stock one, its not holding boost very well. Is it worth the money? Will it leak under partial throttle???

we tested the BPV/BOV when forge was fiting it to the MSP. Works like a charm! beffier and better then stock and looks better.

[Spooled]

Dual BPV might be a good setup, too, like Psyklops said. It's all about releasing the pressure as fast as possible. I started a thread a little while ago about making the BPV path larger by welding a larger diameter nipple on the Injen CAI and using a larger BPV. I suppose you'd need a larger nipple on the hot pipe, too.

[otmsp]

Maybe I'll just end up with the MAF relocated on the pressure side and a BOV on the hot pipe (Turbo - IC) and call it a day!
me too!

[Psyklops]

Dual BPV might be a good setup, too, like Psyklops said. It's all about releasing the pressure as fast as possible. I started a thread a little while ago about making the BPV path larger by welding a larger diameter nipple on the Injen CAI and using a larger BPV. I suppose you'd need a larger nipple on the hot pipe, too.

Ah, I see why having more pressure released to the intake would help - because surge is created by the air being forced back onto the "output" side of the turbo. Recirculating faster (i.e., allowing more air to flow into the "input" side of the turbo) would probably allow the turbo to spool faster. I think we might have to call in 505Zoom for some input. To hear his different setup clicks, go to this post: http://www.msprotege.com/forum/showthread.php?t=123614457

[FlyinMSP]

I never had much of a turkey (or very little)! Actually my car sounds a bit like the third vid (Dual BPV), it's more of a "tchakkk!"...

On another topic, I was wondering if this unit, HKS's EIDS could help if we just vented to atmo:

http://www.hksusa.com/products/?id=2175

[Spooled]

I never had much of a turkey (or very little)! Actually my car sounds a bit like the third vid (Dual BPV), it's more of a "tchakkk!"...

On another topic, I was wondering if this unit, HKS's EIDS could help if we just vented to atmo:

http://www.hksusa.com/products/?id=2175

Funny thing is that mine sounds similar, too. It's different when I drive different ways. I never abruptly let off the gas while still in gear. I always push the clutch in at the same time to save the drivetrain. Sometimes when I do that at a slower speed is actually sounds like a BOV whoosh. I figure that with a larger BPV or dual BPV it will clean it up under all instances.

I've seen that EIDS before and was wondering the same thing. It looks like it's vehical specific, though.

[Psyklops]

I never had much of a turkey (or very little)! Actually my car sounds a bit like the third vid (Dual BPV), it's more of a "tchakkk!"...

On another topic, I was wondering if this unit, HKS's EIDS could help if we just vented to atmo:

http://www.hksusa.com/products/?id=2175

Looks interesting. I wonder how you install it? Seems to be a universal unit as it says "All" in the description. On further review, it could be both universal and vehicle specific.

[FlyinMSP]

This is how you install it on an Evo:

http://forums.evolutionm.net/showthread.php?t=142042

I've been searching and, unfortunately (as usual), it seems to be vehicle specific and I couldn't find anything for Mazda. Oh well, another short-lived illusion! :(

[ChopstickHero]

Hey...no Prob.

The Forge BPV has no issues.

I don't know about the Forge BOV though, as I don't run that.

I don't know if that is what you meant or not, just wanted to throw it out there just incase.

-Ryan


Is the Forge BPV adjustable? meaning, can you adjust how hard or soft it can be? or is it just simply a replacement for the stock BPV?

I have a feeling my stock BPV is leaking a bit on boost. so now that i am running higher boost (about 10psi), i want a BPV that doesn't leak and can hold it longer.

[SergMSP]

Yeah, I've looked into GFB in the past for this part....

I think the easiest option with the MSP is just to retain the stock BPV and add a secondary BOV. No plugging at that point, just installed the BOV like you would any car.

Hey I have a Greddy BOV type s which I am planning to install on the cold pipe and run a dual valve setup with the forge BPV...anyone have experience or seen this done before? lil help?...