forge bpv or hks bpv

Bonafide_Spd3

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2007 Mazdaspeed3 GT Cosmic Blue
Which bpv would you guys prefer? I've been looking at these two for awhile and I'm gonna purchase one soon. Is there a reason hks cost more? I know you don't have to deal with shims. Does one hold boost better than the other? Any answers would be appreciated, thanks
 
i have heard the HKS in person for the first time 3 days ago and it sounded terrible, like a bird chirping! It was on a twin turbo Nissan 300ZX.

How about the Greddy Type-S? Sexiest sounding bov/bpv ever made ;) No shims needed just turn the screw at the top to adjust the stiffness
 
i have heard the HKS in person for the first time 3 days ago and it sounded terrible, like a bird chirping! It was on a twin turbo Nissan 300ZX.

How about the Greddy Type-S? Sexiest sounding bov/bpv ever made ;) No shims needed just turn the screw at the top to adjust the stiffness

A BOV of one car might sound horrible but on another car it might sound better. I know for sure that I love the type-r bov on a srt-4 but on a boosted 3 sounded like pffffffft
 
Is it a PITA to keep adjusting it? I would you know when it is perfect?

it took a few times of twisting it and some driving it for it to come out perfect. I don't have any issues with it at all. It takes some wear and tear to break it in just like the other bov's do. The spring just needs to get used to your driving taste and boost usage and then its all good from there.
 
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A BOV of one car might sound horrible but on another car it might sound better. I know for sure that I love the type-r bov on a srt-4 but on a boosted 3 sounded like pffffffft

isn't the type-r for 400+ hp? that's what I was thinking. I'll take a video of the type-s on mine and post it up if someone wants to hear.

Really all bov's are preferrence based. LOTS of people like HKS, especially in the MR2 forums, but its all up to the buyer.
 
So the only difference in all the bpv is the noise it makes? one doesn't hold boost better than an other one? I don't know why forge don't cost as much. IDK... After I see how my stocker holds boost I'm gonna get a bpv just to see the boost difference. Just waiting for my ventpod
 
yea i wanna know too, if one holds boost better than the other. i'm thinking u get what u pay for. personally, i like the sound of the hks and i'm leaning over direction.
 
Gosh... which bpv to get. I know my wife doesn't want me to spend a bunch of money on car parts but that is just too bad. People always talk about what a great product forge is. I never heard about turbosmart until I joined these forums. My buddies always talked about hks. It's just too bad that there isn't no modded MS3s in the area. I've seen about 8 different ones and they look to be all stock. Hopefully when I move back up to norcal in 7 more months there will be some people in the area with MS3s
 
HA, i guessed right :D too bad you weren't any further south ... south would have been able to make you hear the forge in person. Either way, its a personal preference when it comes to bov/bpv and the sound they make. In the MS3 market I think the all if not most of them are pretty decent. I have the Forge on now and it performs well but I'm going to install the HKS cause I'm just looking for something new and it give brownie points at car shows. The Forge to the untrained eye is just another stock piece.
 
A young fellow who has a very nice True red one runs the Turbosmart and is quite pleased it seems. I am not sure whether my Forge is louder or more chingy though. We had an hks on the Del Sol and it was much chingier than me.
 
Hmmm... decisions decisions... I still got alittle bit of time to decide. Hopefully there will be somemore info between the two.
 
I just don't know why forge cost less than the other bpv? Is it looks? Does it hold boost as well at the other BPVs out there? Is it because you gotta mess with the springs and shims?
 
I just don't know why forge cost less than the other bpv? Is it looks? Does it hold boost as well at the other BPVs out there? Is it because you gotta mess with the springs and shims?

I'd have to say, it's the way it was designed and how it functions. They all hold boost better than the stock valve but all aftermarket function differently. That's all I can think of.
 

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