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View Full Version : Point of upgrading the BPV


laloosh
08-07-2007, 10:30 PM
Just like the tittle says. What is the point of spending 200-300 dollars? Does an aftermarket one actaully do anything differnt besides make a differnt noise than the stock one? Call me a turbo newb but i never understood the point of upgrading it...so edumacate me. (hear ya)
oskinosmee
08-07-2007, 11:02 PM
Coming from a spec v like yourself i want to know also, But i think it helps with holding boost.
CaSHMeRe
08-07-2007, 11:09 PM
the stock bov is plastic and made to handle stock boost.

any time you start pushing it and trying to increase boost, many times the stock plastic bov/bpv starts to leak and not hold boost as well.

most people get them for sound/looks. the only mechanical advantage is what i posted above.
laloosh
08-07-2007, 11:15 PM
so pretty much unless u raise the boost its a pointless mod when it comes to performance? I have a cpe intake and im ordering a cpe downpipe very soon. So my question is will a i/tbe cause the stock bov to leak? a i/tbe should not raise the stock boost levels it should just make them hit sooner in the rpm band right?
eddienyny
08-07-2007, 11:20 PM
I think this poll speaks for itself:

http://www.mazdas247.com/forum/showthread.php?t=123675670&highlight=poll
CaSHMeRe
08-07-2007, 11:25 PM
I think this poll speaks for itself:

http://www.mazdas247.com/forum/showthread.php?t=123675670&highlight=poll

in who's opinion ?

a VTA BOV can be tuned correctly.

Lets see you push 23lbs with the stock BPV/BOV without it leaking.

Unless tuned, i do agree a VTA BOV is a waste of money, but once ur car is tuned and especially running higher #'s, it needs to be upgraded.
laloosh
08-07-2007, 11:33 PM
So inconclusion unless ure running some kinda of piggyback/flash that increases boost and bpv/bov is pointless and a waste of money when it comes to performance? Im not trying to hate on the mod, i just wanna understand how it works.
CaSHMeRe
08-07-2007, 11:37 PM
yes. unless you plan on running higher boost, there really is no point to upgrading your bpv/bov.
tru-boost
08-08-2007, 12:21 AM
yeah a VTA blow off is a waste.... agood bpv is not !
i notice much better throttle reponse and faster spool up with my forge.
CaSHMeRe
08-08-2007, 01:06 AM
yeah a VTA blow off is a waste.... agood bpv is not !
i notice much better throttle reponse and faster spool up with my forge.

not a waste if tuned correctly...
SwampAss
08-08-2007, 08:25 AM
why not go with a diverter like a Forge 007? (assuming they fit our cars)
tru-boost
08-08-2007, 04:02 PM
not a waste if tuned correctly...

tuned correctly .......is not an option for us at the moment !!
Jays07MS3
08-08-2007, 04:32 PM
not a waste if tuned correctly...

So are you saying a VTA BOV would be better than recirc valve on a MAF car or just saying a VTA BOV is not a waste of money? If its the first, then I guess I don't quite understand how losing metered air to the atmosphere is a benefit other than to make a lot of sound.
clos561
08-08-2007, 06:43 PM
i have hks which is vta/recirc...works fine, i bought it because i will eventually increase boost and tune.