BEST BOV??

[speeddemon]

I see a couple different of BOV's that have their pros and cons. But seriously does anyone know what BOV or BPV is the best for our cars meaning performance/ sound/ price?

[cpolly69]

Mazda Forums

[Unoriginalusername]

hks

[dixie789456]

yeah my forge first gen bpv is the best one ever and you can have it for 110.00!!!

[dizzin9]

toss up between Injen BOV and AEM BPV

[FORZDA 1]

Originally Posted by speeddemon I see a couple different of BOV's that have their pros and cons. But seriously does anyone know what BOV or BPV is the best for our cars meaning performance/ sound/ price?

My results prove to me that the OEM BPV is the BEST for PERFORMANCE and price(free?), but doesn't stick closed long enough at throttle close to make the big whoosh sounds so many seem to want...

I'm running (over 2 years & 20k miles) a highly bolted car with my own ECU tune first via Xede piggyback EMS and more recently via ATR ECU reflash and the OEM BPV (still) works perfectly at 20+psi. I've run several aftermarket BPVs and NONE work as well as the stock BPV. In fact, I think the cheezy aftermarket BPVs may be a contributor to early turbo seal failures(smoking...) due to the shock of the pressure spikes at throttle close when shifting at high boost levels. The big pressure hit bounces the compressor wheel against the thrust bearing which MAY contribute to the oil leakage into the intake manifold/intercooler, etc.

[FreeFlyFreak]

Originally Posted by FORZDA 1 My results prove to me that the OEM BPV is the BEST for PERFORMANCE and price(free?), but doesn't stick closed long enough at throttle close to make the big whoosh sounds so many seem to want... OEM BPV (still) works perfectly at 20+psi. I've run several aftermarket BPVs and NONE work as well as the stock BPV.

I agree 100%.
Even worse if your aftermarket valve is not serviced regularly and properly.
I for one, have experienced the negative effects of a poorly lubricated Forge valve.
Stumble logged, appears timing related.

Stock is best.
It works, it is reliable and it doesn't need servicing.
It either works, or it is broken and should be replaced with another, it is that simple.

[ms3077]

TurboSmart Compact Dual Port.

I don't have any hard evidence that suggest it's a lot better than the stock bpv but in my opinion it performs a little better and definitely sounds / looks better.

When I say it performs better I’m mostly referring to how quickly it recovers / holds boost. Response and drivability is somewhat improved.

Is it worth 300+ bucks? Probably not unless your stocker is fucked and or you place a strong value on looks / sound.

[speeddemon]

Thanks everyone. I think i might stick with my stock BPV and put the money to a different part. Any suggestions? I have a CPE CAI, CPE MM, TWM SS, CPE TIP. I thought about removing one of my resonators, i heard other people doing it and it sounds a lot better

[2007speed3]

get a bpv.

[Unoriginalusername]

i have had both the forge and hks. i don't get why people like the forge, it is annoying as hell and made very cheaply. If you like metal clanging sounds then this is the one for you.

The HKS i had when i had a FMIC, SRI, TBE, AP and i found it held boost much better than the stock BPV did. for an OEM car i agree the best is the one from the factory, even though the HKS in recirc is a nice touch from a sound perspective. when you are running more boost pressure because of less loss in the FMIC, and more from tunning the OEM in most cases doesn't seem to hold it well and then an aftermarket one makes sense.

I would only consider a recirc valve, not a blow off or even a hybrid of both which is why i liked the hks unit. here is a video of it so you get an idea of what it sounded like with the SRI (which has a more distinct sound than the cai i had before it)

YouTube - Mazdaspeed 3 Cobb SRI & HKS SSQV BPV

YouTube - Mazdaspeed 3 Cobb SRI & HKS SSQV BPV

YouTube - Mazdaspeed 3 driveby (exhaust, intake, bpv)

YouTube - Mazdaspeed 3 driveby (exhaust, intake, bpv)

[triple_threat]

I have the Turbo XS Hybrid BPV and i love it! It performs well, and sounds mean. It has a deeper tone, not to loud and not to quiet. I haven't tried any other BPV or BOV on this car so im not gonna say its the best one out there, but i think its great imo. I have tried others on different cars and some of them were nasty sounding and way to loud. And make sure you get a BPV, either full recirclated or hybrid. BOV vent to atmosphere will make your car run like shit. Hope my oppinion helps ya out a little!

[hnda etr]

Synchronic - Piston action FTW! Synapse Engineering

[tbot]

^^agree love mine and doesn't have the surge issue. Everywhere I've read says the same.


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[ZoomZoomPSSH]

i'd say a self adjusting like the hks. w/e u choose to go with be sure to not make a decision strictly on sound

[MSMS3]

Originally Posted by FORZDA 1 My results prove to me that the OEM BPV is the BEST for PERFORMANCE and price(free?), but doesn't stick closed long enough at throttle close to make the big whoosh sounds so many seem to want... I'm running (over 2 years & 20k miles) a highly bolted car with my own ECU tune first via Xede piggyback EMS and more recently via ATR ECU reflash and the OEM BPV (still) works perfectly at 20+psi. I've run several aftermarket BPVs and NONE work as well as the stock BPV. In fact, I think the cheezy aftermarket BPVs may be a contributor to early turbo seal failures(smoking...) due to the shock of the pressure spikes at throttle close when shifting at high boost levels. The big pressure hit bounces the compressor wheel against the thrust bearing which MAY contribute to the oil leakage into the intake manifold/intercooler, etc.

On this subject, truer words have never been spoke. +1 Stock BPV at 29,000 miles with my mods. Holds boost great, releases properly. If it ain't broke, don't fix it.

[IshiKage]

save yourself from spending money on an inlet and get a testpipe instead. that way you actually get some real gains

[D08SPEED3]

TS Dual Port Run 50/50!!!

[ZoomZoomVT]

synchronic!!

[dizzin9]

apexi

[boosted3]

i love my hks ssq black series especially whenits vented to atmosphere like mine is

[06spped6]

I love my ts dual compact 50-50 great sound and great service.

[speedms6]

love my hks ssqv as well, but i run recirc

[flyrevs2]

Streetunit Turbosmart BPV - rocks
Forge Gen 1 works great also but you got a lot of ninja sword fighting goin on all day with that

[CptnFierce]

can someone PLEASE point me in the direction to find the stock boost level on the MS3 or a thread with the stock specs of boost, offset, lug patterns please ive been searching for at least 2 days now and the search is so BROAD i cant find a specific threat for it. pleaseeeeee thank u

[Frequentflyer]

I'm back on the stock BPV for shits and giggles. Personally, I like it better than the Forge Gen 1 after living with the ching ching for ver a year now. The stock BPV also seems to be smoother between shifts and seems to hold my stage 2 boost just fine. Maybe I'll go back to an aftermarket valve one day, but personally I think your $150 would be better spent on a test pipe or intake FIRST and worry about replacing the OE BPV after you start pushing most boost.

[speedtwee]

i have an hks v3 sounds good.

[Tcman2006]

i love my hks ssqv black edition plus it was freeeeeeeeeeeee!!!!!!!!!!!!!!!!!

[zach711f]

I got the turbo xs hybrid. it sounds great and no check engine lights...the problem with our cars is they from what I know do not make a MAF delete so get ur self the dual port or the turbo xs hybrid if u want the woosh noise with out a problem.

[ms3077]

Originally Posted by CptnFierce can someone PLEASE point me in the direction to find the stock boost level on the MS3 or a thread with the stock specs of boost, offset, lug patterns please ive been searching for at least 2 days now and the search is so BROAD i cant find a specific threat for it. pleaseeeeee thank u

I can't answer all your questions but I do know what a stock MS3 should be boosting.

A STOCK MS3 will peak to ~17.5-18 PSI
A STOCK MS3 should hold ~13.5 psi (1-4th gear)
A STOCK MS3 should hold ~14.5-15psi (5-6h gear)

P.S. These values may vary up to +/- 1.5 PSI depending on conditions.

An intake will increase the boost roughly 1.5 -2PSI over stock

Stock RIM offset is: 52.5

Lug pattern ? I'm sure someone knows this off the top of their heads??

[Biggu]

IMO everyone will have a different opinion. id say the SU 50/50 is probably one of the better ones but no one can really say for sure.

[RayRayBauder]

one that isn't plastic and has a mazda sign on it

[MSMS3]

Originally Posted by RayRayBauder one that isn't plastic and has a mazda sign on it

Why? Replacing it is not likely to improve performance.

[Frequentflyer]

Originally Posted by RayRayBauder one that isn't plastic and has a mazda sign on it

I truly believe the aftermarket BOV/BPV world has flourished off peoples' need to hear the "ppffffftttttttttttt" sound everytime they shift (or the "ching" if you have the Forge) and not from any hard evidence that they increase performance or enhance drivability. For a stock valve, the OE unit does a good job and I know it's not my imagination that it is a lot smooth to drive than my 1st Gen Forge valve. The Forge had way too much flutter and made the car jerky sometimes. Granted, I may have had it tuned wrong with (blue spring with 1 shim for 18-19psi), but I'm happy using the stock valve again. The stock valves are cheap the replace too.

[hartungenator]

Forge 2nd Gen BPV
Forge Motorsport | Alloy Fabrication

[hartungenator]

By the way, I'm not disputing the quality of the OEM BPV on those it works for, but on the CX-7 many owners have found the stock BPV leaks boost (they used Dashawks to show the improvement with an aftermarket BPV). Maybe it's just a few bad apples, but I know with mine I noticed a decent improvement in boost when I switched to the Forge...

[RayRayBauder]

my stock BOV sucked. that bitch started to leak so i got an HKS and now i dont worry about it. if mine wasn't leaking i would have probably stayed with the stock one. i don't care about the sound at all.

[wakeboarddude]

don't lie ray! everytime you hear your bpv you blow a load in your pants! Duuuddeee! were have you been ray??? you went ghost for a while!

[jaywo33]

i run 22psi everyday and the stock bpv blew into pieces. Got the HKS SSQV and i get way better holds on vacuum and boost. I could care less about sound, its all about the boost!

[MSMS3]

Don't know how a BPV would blow into pieces at 22 psi. But I can see how a K04 turbo would blow into pieces if run every day at 22 psi.

Little 5mm inconel coated center shaft overheats, pushing 1600+ degrees, shaft sags, internal clearance is lost and blades crash into housing. I could see the compressor side blade pieces even get sucked into the intake and zoom, zoom, boom.

Must be an exaggeration, or just a matter of time.