spaceman_spiff

hi guys, as the title says, what's a good BOV on a relatively stock sequential setup? i do believe i am running a stock BOV right now as I can hear the pressure release when driving, but it's very faint and almost inaudible when cruising around town. i've read that BOV's are able to produce a louder sound when they have "horns" or "air splitters". not exactly sure what that means. any suggestions?

samad

iTrader: (1)

the cheapest way is just to remove the pipe connected to the airbox from the stock BOV....youll have the sound you want!

gracer7-rx7

iTrader: (16)

Did you notice the FAQ thread right above this thread? Read it. It has plenty of good info on BOV.

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/

spaceman_spiff

Yea. It just says that rx7 owners install them and that when installed, makes the same sound as the stock. I was asking on what aftermarket options were available to make it louder

WanKeL FD RX-7

iTrader: (7)

I have a HKS ssqv and the sounds is pretty nice, but very common...

Max

spaceman_spiff

is it much louder than the stock BOV? what difference does it make if it is a common BOV?

IRPerformance

iTrader: (41)

There is no reason to upgrade the bov with stock turbos unless you want to make more noise. There is no performance gain.

DaleClark

iTrader: (55)

Before you spend the money, disconnect the stock BOV's from the stock airbox. They make QUITE a bit of noise, actually sound pretty good. They also respond better than many of the BOV's on the market - always smooth.

IMHO, with the stock twins, an aftermarket BOV is a waste of money. The stock ones flow great, make noise, and can handle anything power-wise you want to throw at them.

I would recommend capping the holes in the airbox if you do this long term. Hit up the hardware section in Wal-Mart and get some chair leg caps in black rubber. I think it's either 3/4" or 7/8" size you need - that will fit great.

Dale

surfmon

iTrader: (6)

agreed.......the stockers sound good

spaceman_spiff

hmm, interesting. well I do believe my stock air box has already been removed when I bought my car (there are dual air intakes in its place right now). where exactly would the BOV be located in relation to these intakes then?

samad

iTrader: (1)

just wondering do the stock twins have 2 BOV's .....cuz i thought ones a blow off and the other a charge relief or something...are they both the same thing?

Mahjik

iTrader: (1)

Here's a post I made in one of the various threads about this topic:
https://www.rx7club.com/showpost.php...4&postcount=11

As for your current setup, can you take a picture? Even some of the aftermarket intakes plumb the BOV outlet back into the intake track to silence the sound.

Mahjik

iTrader: (1)

They are both the "same type of device", but they are used for two different purposes.

spaceman_spiff

Yeah all I have is a cell phone camera but I'll try to take a quick snap shot and post it up here asap, thanks

spaceman_spiff

okay just snapped this now, here's what it looks like:



any takers?

the-k-man

I believe this is the one you want to unhook.

spaceman_spiff

that's just a rubber hose directly connected on. if i disconnect it, won't that have some kind of adverse effect? or is that where the extra sound will come out? i still haven't figured out where the stock BOV is (unless i'm retarded and that's it)

the-k-man

That hose should attach to the BOV a little farther back. The BOV is brown and has a small vacume line on the top. then the hose continues down to the Y-Pipe. There is two of them right by each other. Im not sure which one is the BOV and which one is Charge relief.

If you remove the hoses, make sure to plug the holes on the filter adapter so it wont let air bypass the filter.

dgeesaman

iTrader: (7)

The one with the big hose coming off the center of the y-pipe is the main BOV. The other is the charge relief. They have labels but they are sort of interchangeable so I don't rely on that.

Definitely you need the small vacuum line running to the BOV, or else it won't function.

spaceman_spiff

my main goal here is to just make a louder BOV than stock, so if I disconnect that main hose the-k-man pointed out, would that produce a louder sound? is the small vacuum line running to the BOV visible in the above picture?

rotarymandan

iTrader: (15)

Unhook the hose K man pointed out back at the stock BOV so you don't have a hose flopping around, and then cap off the hole on the intake, and you are good to go.

adam c

iTrader: (2)

What's the point of making a louder noise? Who are you trying to impress? Teenage girls?, Ricers?? Either way, it is a foolish waste of time & money.

It seems to me that your car probably needs a lot of more important things than a stupid loud BOV.

spaceman_spiff

coming from anyone else on this board, i'd probably take that more seriously, but i've seen your posts so i don't really care. it's cool

dgeesaman

iTrader: (7)

You should disconnect the big hose from the airbox before concluding the stock BOV is wimpy and inaudible.

I mean think about it - how can anyone respect your opinion if you can't take the time to read a manual or diagram and figure out which one is the blow off valve?

adam c

iTrader: (2)

That's right, I'm a cranky (cheap) bastard

However, I'm usually dead on with my comments/questions. So what is the point of a louder blowoff valve, and who are you trying to impress by making a louder noise?