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-   -   Loudest Bov Known! (https://www.miataturbo.net/prefabbed-turbo-kits-3/loudest-bov-known-15154/)

turbobluemiata 12-31-2007 05:54 AM

Loudest Bov Known!
 
what are the loudest bovs out there right now i have an ebay replica of a greddy rs one and its pretty quiet???

mx03tb 12-31-2007 06:18 AM

the REAL greddy rs is pretty loud, or the xs rfl(realfuckingloud), tial bov those are some good ones

jobambo 12-31-2007 06:24 AM

Turbo XS RFL is loud. Although HKS is louder because of its higher pitch.

rmcelwee 12-31-2007 08:01 AM

If you hook up both ports on a greddy r-type it is pretty damn loud (unhooking the 2nd port makes it quiet). My wife says you can hear my BOV way down the street before you can hear my 3' long exhaust that goes from DP to cherry bomb. You can hear it in this video:


Fireindc 12-31-2007 12:44 PM

The rfl is way louder than a ssqv at high boost pressures.

Also Rmcelwee, is there a specific vaccume line you should use to hook up the second port, i use the bottom port on the bov and hook it straight to the intake manifold, im assuming you hook the top one up somewhere closer to the turbine?

y8s 12-31-2007 01:18 PM

my greddy type R isn't very loud... but that's at 9 psi.

the noise is turbulence. meaning restriction. the type R is more about flow than noise.

XxGoKoUxX 12-31-2007 01:32 PM

Sard R2D2..... look it up anywhere, they'll all tell you it's mother effin loud.... looks ugly tho imo (and a lot of people claim it's louder than RFL/SSQ

spike 12-31-2007 01:39 PM

Turbosmart Megasonic,even at low 8 psi it's loud as shit.The TurboXS RFL does not even compare to this when it comes down to niose and flow.

flyineunos 12-31-2007 01:47 PM

i think mines pretty loud.. oldschool Blitz Super Sound

Savington 12-31-2007 03:51 PM

My eBay all-metal bypass valve is decently loud.


Dark Wanderer 12-31-2007 04:11 PM


Originally Posted by Savington (Post 191779)
My eBay all-metal bypass valve is decently loud.


Wow its really loud! I could have mistaken the sound. for spinning no grip tire shifting!

But isn't supposed that the BPV be quieter than BOV?

elesjuan 12-31-2007 04:27 PM


Originally Posted by Savington (Post 191779)
My eBay all-metal bypass valve is decently loud.


Ack. Thats number one of the two sounds I hate from a bov... the second is compressor surge. :crx:

Which valve do you have?

dc2696 12-31-2007 05:00 PM

Loud bov's are the Devil!

cjernigan 12-31-2007 05:06 PM

Duck calls taped to a BOV are hella loud and obnoxious. Go for it.

rmcelwee 12-31-2007 05:29 PM


Originally Posted by Fireindc (Post 191729)
Also Rmcelwee, is there a specific vaccume line you should use to hook up the second port, i use the bottom port on the bov and hook it straight to the intake manifold, im assuming you hook the top one up somewhere closer to the turbine?

The top port is hooked to the compressor and the bottom port is hooked to the vac port post throttle body (or the other way around <G>). It is that huge differential pressure which makes the difference in sound.

rmcelwee 12-31-2007 05:32 PM


Originally Posted by y8s (Post 191740)
my greddy type R isn't very loud... but that's at 9 psi.

the noise is turbulence. meaning restriction. the type R is more about flow than noise.

Do you have both ports hooked up? I'm just curious if the 9 psi vs 15 psi makes that big a difference in sound.

y8s 12-31-2007 05:39 PM



at about :26 you can hear it while scott's got his head under the hood. I do have both ports hooked up. you can also hear it about :36 when it whistles as it gets close to atmospheric.

Savington 12-31-2007 08:37 PM


Originally Posted by elesjuan (Post 191785)
Ack. Thats number one of the two sounds I hate from a bov... the second is compressor surge. :crx:

Which valve do you have?

It was advertised as a bypass valve for a 1.8T. I'm running it as a VTA BOV.

jtpaintballwdp 12-31-2007 09:07 PM

My SSQ is quite compaired to the RFL i had on my SR20...The SSQ is higher pitched, but I think is sounds sweet


RFL would make people jump on the side of the road...

UrbanSoot 12-31-2007 09:15 PM

i hated my ssq on starion

yo, i still have duck call to mount onto bov (but no turbo any more). ill give it away for free if anyone wants it. shipping is on you though.


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