loud BOV

[deejayS13]

hey silvia peoples...im getting my sr20det put in my s13 in november...finally....buying hook up parts now and tryna make sure i get what i want...

i want a LOUD blow off valve...can any of you guys put me on to the loud *ish??? i've heard alot of stuff. but not from people w/ sr20's...any recommendations?

[kuruptR]

hks ssq, greddy type s

[s14slide]

build engine. Run plenty boost. Loud w/ just about any BOV that has a horn on it. That trumpet lookin thing is just for that, to be loud.

[KiDyNomiTe]

they are all loud, doesnt really differ from car to car. If you really want it loud just mount it higher up. And don't reroute it (even though that will help the car in the long run).

[RedSuns]

Turbo XS H34....



at only 14psi mine is FREAKING LOUD

[nrcooled]

The turboXS and the Greddy are the two loudest that I have heard.

Civickilla's is crazy loud and the Greddy type S is ear piercing

[crioten]

im a moron...but....

am i right when i assume that the sound a bov makes hardly changes from sr to kat?:hammer:

[old_s13]

Its a pressure relief valve.. thats all it is. It doesnt matter if its KA or SR or Ferrari F50 w/ quad-turbo.. its ALL the same (depends more on boost level if anything).

[FRpilot]

loud bov?? for what purpose? recirculating is better for performance..

[240_keyy]

FRpilot- loud bov?? for what purpose? recirculating is better for performance..

Oh great not this argument again. I have no negative side effects from venting...

[s13silady]

if you want loud BOV, then go with the apexi twin chambers.. or the turbo XS BOV... those are loud... i had the twin chambers...
but got a HKS super BOV instead... rather have performance than sound...

[Muzzy]

aw damnit!!
the apex is loud too?!?!??
thas wut i was tryin to get away from.
the Type S doesnt sound too loud to me...jus a woosh
i heard the apex sound bite too and it didnt sound too bad....the HKS... :nono: ...i dont like the sound for me...sounds koo..but too loud and annoying after a while...my car is loud enough as it is

[andrave]

someone has a video that says "critique my drifting, 56k stay away" in the subject line, and it has a turbo 240 with a greddy type S and I like the way it sounds lots.

[old_s13]

Originally posted by 240_keyy
Oh great not this argument again. I have no negative side effects from venting...

its not an arguement, its a decision based on the setup of the car.

if the car has a stock ecu, the computer will EXPECT air at idle -- if that air isnt there, the car will stall when the car comes to a stop.

if the ECU has been modified or if you are running some other fuel management, then this obviously is not an issue and can easily be modified.. so running the BOV to atmo isnt a problem at all.

nothing better, nothing worse.. just different. although the bov sound can gather attention, I personally dont NEED or care for it.. I just get a kick out of seeing OTHER people get woodies over it. I dunno why people are infatuated over stupid shiet like a pressure release valve.. its nothing special at all. People should be impressed with ones driving skills, not with a stupid whistle.

idiots...

[Andy5]

I just get a kick out of seeing OTHER people get woodies over it <------ lol


Theres a kid here who owns a Black Grand Prix GTP that has that fake BOV sound maker. Its funny, people get all happy and excited when it goes off.

[andrave]

how do you know its fake? why the **** would you put fake a BOV sound on a car that is forced induction? wouldn't it be easier just to put a real one on there? I'm sure it has some kind of recirculation from the factory (most supercharged cars do).

[92s13]

Check out www.blowoffvalves.com for tons of video clips and mp3s of a bucnh of different BOV's. So far the loudest one I've heard is the TurboXS RFL. That thing sounds like a dump truck. As far as a nice sound I'd go with HKS, Greddy, or Apexi, IMO. Check out the site and decide for yourself.;)

[Andy5]

how do i know? because i've seen under his hood. And why he did it? I dunno why do people buy altezza's?

[Burmonster]

Why not buy a bunch of stickers that say TURBOCHARGED and a Greddy/Trust turbo license plate frame. Its cheaper and does the same thing a loud blow off valve does...draw attention from the kid in the car next to you.

[240_keyy]

Originally posted by old_s13
its not an arguement, its a decision based on the setup of the car.

if the car has a stock ecu, the computer will EXPECT air at idle -- if that air isnt there, the car will stall when the car comes to a stop.

if the ECU has been modified or if you are running some other fuel management, then this obviously is not an issue and can easily be modified.. so running the BOV to atmo isnt a problem at all.

nothing better, nothing worse.. just different. although the bov sound can gather attention, I personally dont NEED or care for it.. I just get a kick out of seeing OTHER people get woodies over it. I dunno why people are infatuated over stupid shiet like a pressure release valve.. its nothing special at all. People should be impressed with ones driving skills, not with a stupid whistle.

idiots...

Hey asshat before you pass judgement and make some kinda silly statement like you just did, you should get all of the details.

1. My ECU is stock and my fuel setup is also stock. if you want your bov to be closed at idle you just have to fine tune the screw adjustment to get it to the correct stiffness. I have mine correctly adjusted and since I swapped in the SR six months ago and got the BOV adjusted properly, I have not stalled the car at idle *EVER* it idles just fine and even after boosting hard and coming to a stopsign or whatever, the car has *NEVER* stalled.

2. I didn't recirculate mine simply as a matter of preference, I still might just to see if it makes any difference (and I don't think it will) but I am having *ZERO* problems related to the BOV venting.

My car is the one in the video mentioned above, if you want to see my car (and my skills ((or lack thereof))) and here the BOV, check out that video.

I am not harping on you or anything Old_S13, I am just trying to dispel some of the lies and crap that is on the internet by offering some of my first-hand knowledge. don't take it the wrong way man, I still love you ;)

[andrave]

he is still right though, just cause yours doesn't stall at idle doesn't change the fact that the factory ECU is givin you fuel to match air that the bov took away, so you are gonna be runnin rich after your shifts.

Also, andy5... beat him for me please. Thats retarded.

[KoukiS14]

no offense or nothin'
cause I'm all for the familiar sound of a BOV. . .
but why would you do something against performance just because it sounds cool?

form following function, IMO, is the only way to go.

[adey]

Loudest I've heard is the Blitz ... not sure which model, but I think they only have one. On a stock celica (3sGTE alltrac, silly!) motor, it's LOOOOOUUUUUUD.
If you're going for sound, I definitely say Blitz. The HKS SSQV just sounds plain ASS to me. I hear greddy is similarly ass. (i.e. high pitched "chirp" rather than the sound of pressurized air being let off.)
MHO.

[tougebear]

Originally posted by adey
Loudest I've heard is the Blitz

Yep, the old Blitz BOV w/ the "horn" would be the loudest one. A stronger spring is also available for higher boost. It will get annoying though.

[Muzzy]

...any comments on the apex???
i have heard teh mp3 and video clips but who has heard it in real life and can compare it to others??

[s13silady]

i have the apexi twin chamber... i had it on my KA-T.. it was stupid loud... but very plain sound...but loud... i didnt like it so now on my SR i have the HKS SUPER BOV (oldschool one) sounds better than the new bullet looking super sequential IMO... but i htnk ima have to switch back to my apexi because you could fine tune it.. just at least until i get my Safc..

[Muzzy]

rats.....is it like....a loud woosh or wut?

[deejayS13]

word....thanks people...i think im gonna roll with the Blitz Super Sound DD joint....it'll match my blitz LM i/c and blitz d/p and my nurspec exhaust. :cool: thanks again.



and what? you guys make it sound like a loud BOV can't be a good performer...whats up with that?

[andrave]

think its just like loud exhaust.. its cool for a while but eventually you gut sick of hearing it.
Turbo XS seems like the loudest I've heard at high boost, the blitz one I heard at stock boost on a TT rx-7 also sounded really nice, had a low pitched swoosh sound, really slow.

[Muzzy]

yea i used to love my loud exhaust....till i my blitz intake...then it got louder...tehn i had to wake up early for skool....loud exhaust got even more annoying!!
damn that less restricetive air filter!!!
made my car louder!!!:doh:

[Andrew Bohan]

loud bov is annooooooooying in a daily driver. novelty wears off fast.
also, my friend was having some problems with keeping good boost levels in some cornering situations that required partial throttle, then he fabbed this recirc hose and he says it made a world of difference.

[240_keyy]

lol, yall are a bunch of weenies :)

[Muzzy]

hey old man i know u have the same exhaust as me...but did u ever run it N/A with intake and no cat....with the windows down???
yea its damn loud...annoying in the morning.
i heard your car b4...its no where near as loud as mine...if u heard my car at the meet and thought it was loud....its louder now.

[240silvia]

I agree with pretty much everyone else. If you have enough boost, everything is going to be loud. I have the GReddy Type-R and I love it. If you ask around, pretty much everyone goes with the GReddy Type-S, but that thing has a piercing sound, just like the HKS SuperSeq. I like it, but the Type-R makes the car sound like it has :aw: NUTZ :aw: and I love that. It's loud, and I don't think I'll get tired of it.

Also, if you go with the Type-R, be prepared to buy another spring which is $20. The spring that comes in there doesn't open until 20lbs of boost, and if you are doing that much, :bowdown: :bowdown: :bowdown: :bowdown: :bowdown: :bowdown:

http://www.imagestation.com/picture/sraid80/p1aa8bcdc037fa20397fbd00a56ed22c6/fb084274.jpg

[Andy5]

Acutally, I don't see how someone is gonna know its you that has a BOV/Turbo "unless your the only car around". Ever sit at a stop light and wonder who has that loud annouying bass going from subs?? Its kind of hard to pin point the car. I guess its real noticable if u just blowing it off and have gauges and what not all showing, or have a huge I/C and everyone knows ur turbo. Why people don't recirc? Some people like having a sleeper, others love the attention, some like the noise, others want it as a status symbol (so i hear in the ricer world around my town). Its your own preference, i don't see a point in fighting about whats better. BTW, if u haven't found that speaker, i'll find it later tonight and post the link so you know i'm not full of it :).

[Andy5]

http://www.takakaira.com/accessories/nightpager/nightpager.html told you i'd find it, google works its wonders agian :)

[LonelyDoridori]

The Blitz Super Sound (the one with the horn) sounds the coolest, I think.. Not exactly the loudest under low boost, but the flutter noise is so freaking cool. The SARD R2D2 sounds sweet as well.

[M.Piedlourde]

Originally posted by i'm driftaholic
loud bov is annooooooooying in a daily driver. novelty wears off fast.
also, my friend was having some problems with keeping good boost levels in some cornering situations that required partial throttle, then he fabbed this recirc hose and he says it made a world of difference.

Can your friend still hear some of the noise of the valve pening up, even though he set it up to recirc?

I can understand how an open-air BOV might get tiresome quickly in daily driving, but it would still be nice to hear a very soft "whoosh".

[Andrew Bohan]

i'm sure it still makes noise, but i couldn't hear it over the sound of the motor and exhaust, both from inside and outside the car

[Grant]

http://www.fatboyraceworks.com/~ndahl/hosting/BestBOV.mpg


on a serious note:
well some can be loud but the fact is its annoying. the greddy has a sort of whistle to it, which can get obnoxious. However is it also one of the most reliable, making it a good choice.

HKS was not that loud in my opinon.. Blitz is uber quiet. (well at least mine was).

[nrcooled]

My Blitz SS was loud and sounded like a whip cracking. Like a whooopshhhhhhhhhh! It was cool but the stalling and running uber rich got real old real fast. Then I bought the HKS SQV ( the bronze colored one) I can't even hear it over the engine and exhaust that's the way I like it:boink:

[Muzzy]

wth is uber!!??

[Andrew Bohan]

"wth is uber"????
u != l337!

[Muzzy]

and that is??

[Burmonster]

uber = german for "best" "top" "number one"

[Muzzy]

ah ha!

[TwoFourO]

I would have to say that after having my car for two and a half years, craving the SR20DET the whole time, hearing that BOV noise will NEVER get old. Don't take for granted what some people would give anything for. Hearing that noise just reminds me of all those times when I would sit and wish that I could hear that noise....

sorry about the sappiness, haha

[240_keyy]

hey all, I would just like to retract my previous statements about the recirculated BOV not being necessary. Just as a test to prove you guys wrong I made a hose out of some crap I bought at Home Despot to recirc back into my intake tract.

The whole time I was thinking "I'll show those Zilvia bastards that venting ownz j00!!!"

So I fab up this hose and go test it out. Jesus-pissing-Christ on a stick, man!!!!! recircing made a whole WORLD of difference. Pickup right after shifts is phenominal, there is less lag after shifting, no more fireballs, no more fouled plugs, I dropped 2 tenths in the 8th and I get better gas mileage. Plus the car is VASTLY improved in autocrossing where on and off boost response and quick throttle changes make big differences.

After driving venting for about 6k miles and driving recirculated for about 800 miles, I can say that I will never go back to a vented setup until I get an ECU that is tuned for that, or a standalone with a MAP sensor.

You guys = 1
Me = 0

I admit defeat :bow:

[Steeles]

Originally posted by TwoFourO
I would have to say that after having my car for two and a half years, craving the SR20DET the whole time, hearing that BOV noise will NEVER get old. Don't take for granted what some people would give anything for. Hearing that noise just reminds me of all those times when I would sit and wish that I could hear that noise....

sorry about the sappiness, haha

be more sorry for dead pointless thread revival.

Keyy - very standup ish of you. glad to hear you like the setup. hopefully this winter I'll switch mine back to a recirc setup.. gotta switch some stuff around. V mount baby!

[old_s13]

The blow off sound is completely over-rated. Just be happy that your car runs and kicks ass, that should be the only concern. Unless of course, you guys are trying to impress people with material purchases due to lack of driver skill. :)

[Steeles]

Originally posted by old_s13
The blow off sound is completely over-rated. Just be happy that your car runs and kicks ass, that should be the only concern. Unless of course, you guys are trying to impress people with material purchases due to lack of driver skill. :)

I claim ignorance! hehe I bought mine before I knew any better. my cars mad at me cause I wont buy her new shoes to kick ass in :cry: so she's being pissy.

[old_s13]

it cant be as bad as my car.. my tires are just about toast, they are fucking slicks. i am in desperate need of my fourth set of bridgestones.

[S13CRAVE]

the GReddy Type S is a lil riceboy BOV. the Type R is excellent from what i have heard. I am going with the HKS SSQV for its performance rather than the sound. You could get an HKS Racing BOV if you were running like 30lbs of boost, lol, that thing is loud as all hell

-Ian

[Steeles]

Originally posted by old_s13
it cant be as bad as my car.. my tires are just about toast, they are fucking slicks. i am in desperate need of my fourth set of bridgestones.

hmmm my federals in the rear are almost slicks.. theres a FAINT hint of the V pattern left. the front kumhos are OK but I just found a federal dealer around here. my size is 89 bucks each :) course with the temps dropping I may find some all seasons to throw on... but Im afraid my driving style will eat those faster than the summer performance tires.. decisions decisions.

Screw a blow off valve the Team Orange drifters dont have blow off valves just pure straight compressor surge goodness is where its at!

[kazuo]

Atmospheric BOV does affect performance, even if you have it "adjusted" properly. Even if it deosnt stall you're still running rich. Only way around it is retuned ECU or standalone management...

Trust me, I have the Blitz SS (not the DD, they are different, the SS is the older one) and my car literally pees gas out of the tailpipe. :P

Also, if you want a loud-ass BOV... the Blitz SS is the way to go. I've heard Sheepdog, HKS SSQV, GReddy Type S or whatever, even the XS... my Blitz owns them all. SO FREAKIN LOUD... you can hear the damn thing coming a mile away.

It does have a long, drawn-out kind of "sneezy" sound though...

It is also good for recirculating since its easy to do (just need a bolt on flange and a hose to route it back to the intake), and it'll still make the "ppsht" except no bullshit involved with atmospheric... but it naturally will not be as loud.

Good luck

[kazuo]

oh and yea...

I recirculated the Blitz BOV tonight (after putting it off for damn near forever). Made a world of difference, which was expected since the car wasn't shitting all over itself trying to figure out what happened to the vented air.

You can no longer hear the "ppsht" sound however. Its totally gone. You can hear the valve operating, but only if you have heater/AC/Radio/Everything OFF and are listening carefully. It is louder than the stock recirculation valve, but passerby cannot heat it (which is the point of atmospheric vent is it not?). Defeats the point of having an aftermarket valve in the first place.

The response on the car was vastly improved, it did not sputter or die at all, and the car definitely picked up speed with greater ease than atmospheric vent.

I honestly don't see the point to atmospheric venting at all now besides it sounding cool, because it hinders performance and causes problems.

Unless you have a front mount or something, there is no real reason to vent to atmosphere.

[240_keyy]

having a front mount doesn't make it any better, trust me ;)

[kazuo]

Originally posted by 240_keyy
having a front mount doesn't make it any better, trust me ;)

Well thats not what I meant... IIRC most people run atmospheric BOV with a front mount as opposed to the stock recirculation valve, since it is oddly shaped and is designed to bolt up to the back of the stock sidemount.

[Steeles]

Originally posted by kazuo
Well thats not what I meant... IIRC most people run atmospheric BOV with a front mount as opposed to the stock recirculation valve, since it is oddly shaped and is designed to bolt up to the back of the stock sidemount.

My greddy FMIC kit came with an opening on the cold pipe to recirculate that air back into it though so besides sound or your running a MAP sensor that dosent really care there really is no point except to announce to the world you have aturbocharged car with a BOV. Im past that stage now and am looking forward to recirculating my BOV now.

[kazuo]

Originally posted by Steeles
My greddy FMIC kit came with an opening on the cold pipe to recirculate that air back into it though so besides sound or your running a MAP sensor that dosent really care there really is no point except to announce to the world you have aturbocharged car with a BOV. Im past that stage now and am looking forward to recirculating my BOV now.

:rolleyes:

No kidding, I said that atmospheric BOV is pointless aside from the sound in like two different posts in this very thread.. :P

What I meant by that comment is that I can understand why one would run atmospheric(aftermarket; I know there are a few that recirculate but I am speaking generally) BOV with a FMIC because its less of a hassle to simply bolt up a aftermarket valve that vents to atmosphere than rigg the stock recirc to work. The stock piece bolts to the back of the sidemount, and if you mount it somewhere else it requires a bit of work to get it going with a FMIC app (moivng it to a different location and probably fabricating/modifying the hoses that route the air back into the intake)

Repeating the same thing I said again... :P

[Steeles]

Originally posted by kazuo
:rolleyes:

No kidding, I said that atmospheric BOV is pointless aside from the sound in like two different posts in this very thread.. :P

What I meant by that comment is that I can understand why one would run atmospheric(aftermarket; I know there are a few that recirculate but I am speaking generally) BOV with a FMIC because its less of a hassle to simply bolt up a aftermarket valve that vents to atmosphere than rigg the stock recirc to work. The stock piece bolts to the back of the sidemount, and if you mount it somewhere else it requires a bit of work to get it going with a FMIC app (moivng it to a different location and probably fabricating/modifying the hoses that route the air back into the intake)

Repeating the same thing I said again... :P

Yes we've both said the same thing over and over lets just move on shall we :) potato potato

[deejayS13]

haha i never thought this thread would last this long. thanks for everything...even the peoples who hated on me...i learnted mad crazy stuff...ima get my blitz ss bov ricirculated :D i get my car back from the local sr shop in about two weeks...heres what im gettin: look...lemmie know what u guys think : any hating on my setup is welcome, i still have a week to change stuff up.

sr20det
ACT street/strip clutch
lightweight flywheel
HKS type S i/c
blitz SS bov
custom 3" d/p
apex N-1 cat back
HKS intake filter
3" test pipe
ceramic hotpipe
fuel pressure guage
boost guage
Greddy profec B boost controller
Greddy turbo timer

dont toss...ever.