Bov/dumpvalve is needed to release excess air pressure from the inlet manifold when throttle is released, this stops the engine from racing and keeps everything sane
@mightyminor not only that, it keeps the turbo spooled up so when you get back in the throttle, you don't have as much turbo lag as you would with out a BOV
actually, the bov was invented as an emissions control device. It has nothing to do with saving your turbo. It does however prevent surge off power and thats what it was designed to do but not to save your turbo. Its so the maf doesnt read the air twice and give you 10 times the fuel you need between shifts or reduction in throttle. I had a porsche turbo that had no bov or intercooler for that matter and the turbo lasted 31 years and still works today like new. no maf, no need for bov.
@1JZdorifto thats why rally cars and every other turbo race car never has one, except drift race cars of course but its more of a style thing to them. I had a friend who called Garrett and asked what kind of bov he needed for his turbo and they laughed and said "BOV? the only reason you get a bov is if you like the sound." the only time compressor surge kills your turbo is on power surge that can kill it instantly because its old or too big and the bov doesnt help there so, how does it save it?
@1JZdorifto lol your a moron enough said and who ever you talked to on the phone at Garrett is also a moron Its purpose is to prevent compressor surge, and reduce wear on the turbocharger and engine. Blowoff valves relieve the damaging effects of compressor "surge loading" by allowing the compressed air to vent to atmosphere, ppl dont get BOV;s for the sound looking at your name you have a supra so do i and a DSM and have you notice on a mk3 supra you cant hear the stock bov at all
@Trollin5k You can believe whatever you want that honda ricers tell you but I stand by my statements. there are car companys out there like VW and porsche that use constant pressure systems that can not be vented witha bov. like my '80 porsche turbo wich never had a bov in30 years but never blew a turbo. thats a big indicator that it does no damage. plus every race team that uses a turbo looks at bov's as "sound modifyers" and I also have a dsm wich btw never had a bov from the factory.
@Trollin5k Turbo saving my ass. never in the history of forced induction has a bov saved a turbo. "emissions control device" remember that? look it up. And stop looking for advice on Honda forums, its making you look stupid.
@1JZdorifto SOOOOO True Example Mitsubishi Starion Turbo 2.6L engine Intercooler No, BOV No, 8psi with adjustable/Blocked off wastegate YES!!! And i have never seen a problem with one of those models of Starion until the Newer ones hit the market with a FMIC but still No BOV!!! lol got to love how ricers hear thats turbo where is the BOV??? I dont have one on this particular car.... then your not turbo......i walk away...... damn ricers dont know about classic Mitsubishis SMH
@DSMeclipsegst NICE! i drive an 86 starion 2.6L intercooled 15PSI with upgrades. I also run no BOV! I just walk off to when stupidity rears its ugly head.
@Trollin5k Btw Im a mechanical engineer in the automotive field so Im pretty sure I know what Im talking about. If you think your smarter than the engineers at VW, porsche, and mitsubishi then I think you should go and tell them how stupid they are and see if you can get a job. or maybe come where I work and tell my boss whos been an engineer for 40 years who loves my work how stupid I am and see if you can take my place. Good luck with the job wouldnt want u to live with your parents forever
@Trollin5k OOOO, or maybe Garrett would love to know how stupid and ignorant about turbos they are. I dont know how they became so big being fucking retarded like that.
hey man how have you tuned your bov because i cant set it right to stop fluttering, is yours set hard or soft or in the middle? (i have the same bov as this)
Sounds like you guys read half a page in modified magazine. Its experts like you that keeps us engine heads from destroying our cars. Thank you so much for selflesly posting on these videos.
@senorguitar16 not necessarily. Have you ever let you breath out on a cold day? or how abut a REALLY humid one. keep in mind what a turbo does -compress air a byproduct of compression is both heat, and water. especially in humid climates. basically it could be cold it its producing hot air, or it could be very humid and the mist is the water vapor from the air. besides water in little amounts is good for boosted applications, reduces EGTs and cleans as well.
i remember 100 years ago when i had a soft ic tube like that on my gsx and it blew up like a balloon when boosted...ha ... well i guess my mkiv did too when it was stock lol didn't even remember those days... this just reminded me of all that ;)
This comment has received too many negative votesshow
k u already fail. worst come back ever do ur self a favor fat ass shut up. cause ur car is slow as fuck u dont even have any vids of it and i wouldnt bother cause their ugly slow and worth nuting. junk it. 300 bucks.
haha. You assume my car sucks without even knowing what I drive. And I dont post vids of racing around in my cars because I dont need justification from youtube users or anyone else. I do what I do and drive what I drive because I like it, not because little retards like you say its cool.
And I was browsing the other comments you leave people. Seems you spend all your free time calling people fat asses. Get a life kid.
Pres 1982 edno momiche se samoubi!i sega kato si go prochel tya shte doide pri teb i shte te pogltne vv 21:47 prez noshta!ako ne go ispratish na 5 drugi klipa!!!!!
Evo has something called diverter valves that should not be substituted for BOV's. The MAF sensor calculates a certain amount of air entering the engine and the BOV releases some of that measured air. The result is that you get less air than the system thinks so you end up running rich. A DV saves your turbos and doesnt mess with the A/F ratio. The only reason someone would want a BOV over a DV is for the sound plain and simple which is rice
one of the main purposes of a bov is to prevent compressor surge, which occurs you shift in a turbocharged car, all the pressurized air has no place to go (since your throttle body is closed, but the compressor side of the turbo is still spinning). if your bov didn't vent or recirculate that air, it would press against your compressor wheel and try to make it spin backwards. this will effectively kill your turbocharger over time.
@wasp010 is is possible to mount a bov to a cold air intake system?...i have a mitsubishi eclipse 3g with an k&n cold air intake system and im not sure if a bov fits to my cold air intake...cuz some people say that you need a super or turbo charger..but some people say it also fits to cold air intakes..
@Eclipse03Babam You would have to weld the BOV to your cold air intake and even then it wouldn't do anything but remain shut. There wouldn't be any air exiting the intake that would effect the BOV. You need a turbocharger for a BOV to have any purpose. Otherwise its just a paperweight.
@wasp010 it doesnt try to make your turbocharger spin backwards. It just passes through the blades creating a chopping sound. If It tried to make the turbocharger spin backwards, the whole thing would probably grenade in about half a second with such massive loads.
@MrSlowSkyline The excess air will try and force the compressor to stop/flow backwards. It won't make it spin backwards instantly, but it will but needless pressure on it. BOV's weren't invented to stop a "chopping sound". Don't believe me? Seal your BOV shut for a year and see how long it lasts. After all it'll just make more noise right?
@wasp010 I know this is older than jesus, but that's not what happens.
Compressor surge is more accurately named compressor stall. basically the compressor wheel tries to keep pumping air in and at a point the pressure differential is too great and air leaks through the compressor wheel. If you look at a plot of shaft speed over time during a shift you wont see it drop to 0.
It just depends if it has a provision for recirculation, and where the recirculated air would be dumped, if its pre- Mass Airflow Sensor you can run atmospheric with no problem, but if its post MAF, you will run rich, because the computer already accounts for the air that should have been recirculated
bless u :P
ironhidef1 1 month ago
I buy this blow-of-valve today 40 euros!! (used) for my litle uno turbo.!! i am Happy :DDDDDDDDDD
KiLiGaN0000 5 months ago
Bov/dumpvalve is needed to release excess air pressure from the inlet manifold when throttle is released, this stops the engine from racing and keeps everything sane
mightyminor 5 months ago
@mightyminor not only that, it keeps the turbo spooled up so when you get back in the throttle, you don't have as much turbo lag as you would with out a BOV
kaufmanbros1 3 months ago
@mightyminor lolwut
MrShakotan 2 months ago
that's like the new mazdaspeed3 no BOV lol just a BPV
TazFC3s 5 months ago
what are the blow off valve for?
jerk151810 8 months ago
@jerk151810 the psi the turbo makes....
789films 8 months ago
@jerk151810 to recycle the turbo pressure and keep the same power and extend the life time of the turbo.
rYOBI1338 8 months ago
mine has an extra outlet below the main one and i cant figure out what its for.... anyone know?
Catchertony 9 months ago
@Catchertony Its probably modified RS or a Type S..You need to attach the lower nipple to boost source..
DjayJohn 9 months ago
Sounds great!
kylef369 9 months ago
Sounds a million times better than that annoying squeaky SSQV.
corollafrenzy 10 months ago
lol i like it how its cleaning your pod filter
Salibs 11 months ago
actually, the bov was invented as an emissions control device. It has nothing to do with saving your turbo. It does however prevent surge off power and thats what it was designed to do but not to save your turbo. Its so the maf doesnt read the air twice and give you 10 times the fuel you need between shifts or reduction in throttle. I had a porsche turbo that had no bov or intercooler for that matter and the turbo lasted 31 years and still works today like new. no maf, no need for bov.
1JZdorifto 11 months ago
@1JZdorifto thats why rally cars and every other turbo race car never has one, except drift race cars of course but its more of a style thing to them. I had a friend who called Garrett and asked what kind of bov he needed for his turbo and they laughed and said "BOV? the only reason you get a bov is if you like the sound." the only time compressor surge kills your turbo is on power surge that can kill it instantly because its old or too big and the bov doesnt help there so, how does it save it?
1JZdorifto 11 months ago
@1JZdorifto lol your a moron enough said and who ever you talked to on the phone at Garrett is also a moron Its purpose is to prevent compressor surge, and reduce wear on the turbocharger and engine. Blowoff valves relieve the damaging effects of compressor "surge loading" by allowing the compressed air to vent to atmosphere, ppl dont get BOV;s for the sound looking at your name you have a supra so do i and a DSM and have you notice on a mk3 supra you cant hear the stock bov at all
Trollin5k 8 months ago
@Trollin5k You can believe whatever you want that honda ricers tell you but I stand by my statements. there are car companys out there like VW and porsche that use constant pressure systems that can not be vented witha bov. like my '80 porsche turbo wich never had a bov in30 years but never blew a turbo. thats a big indicator that it does no damage. plus every race team that uses a turbo looks at bov's as "sound modifyers" and I also have a dsm wich btw never had a bov from the factory.
1JZdorifto 8 months ago
@Trollin5k Turbo saving my ass. never in the history of forced induction has a bov saved a turbo. "emissions control device" remember that? look it up. And stop looking for advice on Honda forums, its making you look stupid.
1JZdorifto 8 months ago
@1JZdorifto SOOOOO True Example Mitsubishi Starion Turbo 2.6L engine Intercooler No, BOV No, 8psi with adjustable/Blocked off wastegate YES!!! And i have never seen a problem with one of those models of Starion until the Newer ones hit the market with a FMIC but still No BOV!!! lol got to love how ricers hear thats turbo where is the BOV??? I dont have one on this particular car.... then your not turbo......i walk away...... damn ricers dont know about classic Mitsubishis SMH
DSMeclipsegst 6 months ago
@DSMeclipsegst NICE! i drive an 86 starion 2.6L intercooled 15PSI with upgrades. I also run no BOV! I just walk off to when stupidity rears its ugly head.
1JZdorifto 6 months ago
@Trollin5k Btw Im a mechanical engineer in the automotive field so Im pretty sure I know what Im talking about. If you think your smarter than the engineers at VW, porsche, and mitsubishi then I think you should go and tell them how stupid they are and see if you can get a job. or maybe come where I work and tell my boss whos been an engineer for 40 years who loves my work how stupid I am and see if you can take my place. Good luck with the job wouldnt want u to live with your parents forever
1JZdorifto 8 months ago
@1JZdorifto your a mechanical engineer that argues with 15 year olds.
bluemk3supra 7 months ago
@bluemk3supra well someone has to teach them.
1JZdorifto 7 months ago
@Trollin5k OOOO, or maybe Garrett would love to know how stupid and ignorant about turbos they are. I dont know how they became so big being fucking retarded like that.
1JZdorifto 8 months ago
hey man how have you tuned your bov because i cant set it right to stop fluttering, is yours set hard or soft or in the middle? (i have the same bov as this)
camsta171 1 year ago
Sounds like you guys read half a page in modified magazine. Its experts like you that keeps us engine heads from destroying our cars. Thank you so much for selflesly posting on these videos.
ShickyBalboa 1 year ago
lol that car looks alive and pulsating!
77Poisoned77 1 year ago
idk why but it reminds me of an orgasm when he revs that thing and the bov goes off
ki11joy92 1 year ago
hey what did you buy to fit the BOV onto the hose like that?
buhrrito 1 year ago
@buhrrito looks like a bov adapter plate.
kevinreid 1 year ago
Could i get a girl with a Blow off valve?
jdmohun123 1 year ago
is that air or water spraying out?
spinna313 1 year ago
yes, there's water in the intake....haha!
Unless he's shooting meth or alcohol..
senorguitar16 1 year ago
@senorguitar16 not necessarily. Have you ever let you breath out on a cold day? or how abut a REALLY humid one. keep in mind what a turbo does -compress air a byproduct of compression is both heat, and water. especially in humid climates. basically it could be cold it its producing hot air, or it could be very humid and the mist is the water vapor from the air. besides water in little amounts is good for boosted applications, reduces EGTs and cleans as well.
buckracer 1 year ago
ITS ALIVE xD
FlashDusk 1 year ago
WTF dude your car sounds like it's back Firen after each revv that's not good for ur ride dog
Draeboi0420 1 year ago
yo its moving with each rev... you need to tie it down man~ zzz~
get a strut bar~
zomgbbqwth 2 years ago
its creepy how it moves lol get hard piping bro and a nice big front mount its the way 2go =]
manthony65676567 2 years ago
i have the same bov and mine does not open, im only running 8 psi tho, did u have any problems with your bov, and how much psi are u running
99xtremeturbo 2 years ago
sounds like it's sneezing..
rsxking04 2 years ago 2
how much??
stops914 2 years ago
how do you like the type rs bov sound opposed to the others and the air filter. i saw the same one along with the bov somewhere... lol
is it a decent air filter compared to the regular cone shaped ones.
Nice vid
PattyWaggon93 2 years ago
evet, teşekkür ediyoruz.
sagopakajmer019 2 years ago
look like a big ass boner
madeofmoney1289 2 years ago
and also bend a pipe so the that that shitty rubber one doesnt expand so much one day it explodes
raptorboy1014131 2 years ago
next time take the camera away from the filter so you can actually hear the blow off valve not the turbo sucking air...
s2kage 2 years ago 2
What miillimeter bov outlet do you have?
WRXSubaru05 2 years ago
how bar ??
eli3n 2 years ago
you know that shit got some power
nikkaalley 2 years ago
body the bov sounds diffrent if you set it to soft mode what mode are using
irvingrios18 2 years ago
i remember 100 years ago when i had a soft ic tube like that on my gsx and it blew up like a balloon when boosted...ha ... well i guess my mkiv did too when it was stock lol didn't even remember those days... this just reminded me of all that ;)
spsickfastsupra 2 years ago
damn my bov is fakeeeeeeeeeeeeeeeeee
hudatgurl 2 years ago
@hudatgurl suck shit motherfuckering chinese black cunt
InitialDirt 2 years ago
motherfuckering chinese black cunt ?? haha please bitch u cant even spell! and i aint chinese nor black u LOSER!
hudatgurl 2 years ago
nice sht..
pawllim 2 years ago
Shut up you nigger slut, go finger a milf
InitialDirt 2 years ago
ill finger a milf
2stroke2fast 2 years ago 16
hey i just bought a bov like dis one too, just wondering mines a darker blue but dis ones a light blue, does dat mean mines fake?? cheerssssssss
hudatgurl 2 years ago
greddy bov vs hks bov
timberland1108 2 years ago
lol straight out and then back into the airfilter....
awepon 2 years ago
LOL YEAH I was just noticing that! hahaha that's badass.
Not that it really helps tho, does it :/
ralekriver 2 years ago
nopo lol, dosnt help, its bad. best air intake is cold air. sucking hot air = less performance.
lol sooo badasss
awepon 2 years ago
That's what the intercooler is for.
ProTuner06 2 years ago
yeah but every bit counts tho...
most serious setups would avoid this
awepon 2 years ago
Damn get some piping lol that thing looks like its gona slip off anytime.
usoofat 2 years ago
ITS ALIIIIVEEEE!!!!!nice bov man!!!
7NaYRu7 2 years ago 2
love that bov, had one on my 92 tsi talon with an evoIII @ 18psi street 22psi track. Sexiest sounding bov ever.
Obsidian1985 2 years ago
This comment has received too many negative votes show
talon's r fucking gay and pieces of shit and forgot to menchine slow. eclipse with a turbo lmao.
tomtom11222 2 years ago
Looks like hooked on phonics didn't work for you. It's ok man, you can do it. Just sound it out.
Start working on the english language before you try working on any cars please.
Obsidian1985 2 years ago 4
This comment has received too many negative votes show
k u already fail. worst come back ever do ur self a favor fat ass shut up. cause ur car is slow as fuck u dont even have any vids of it and i wouldnt bother cause their ugly slow and worth nuting. junk it. 300 bucks.
tomtom11222 2 years ago
haha. You assume my car sucks without even knowing what I drive. And I dont post vids of racing around in my cars because I dont need justification from youtube users or anyone else. I do what I do and drive what I drive because I like it, not because little retards like you say its cool.
And I was browsing the other comments you leave people. Seems you spend all your free time calling people fat asses. Get a life kid.
Obsidian1985 2 years ago 83
This comment has received too many negative votes show
i post my sht cause its nice and fast see ucant do that ppl with makr ur shit for spam. cause its a piece of shit slow tallon. now stfu fat ass.
tomtom11222 2 years ago
Now you're just being stupid. Start thinking and stop ruining peoples videos with these comments.
Obsidian1985 2 years ago 3
obsidian = win, tomtom = fail *sigh*
~DSM for Life~
Reaper4988 2 years ago 5
lmfao shut ur fat ass up dsm is fucking gay lmfao and slow.
tomtom11222 2 years ago
@Obsidian1985 DAMM RIGHT MATE
BigPython1986 1 year ago
you failed because you have -6 thumbs DOWN
Phawkers 2 years ago
ur fat cause idc about youtube and u do lmfao.
tomtom11222 2 years ago
you dont care you have like 6 comments for this video you stupid turd you dont care dont respond idiot
Phawkers 2 years ago
turd? ur like 10? and fat? sad.
tomtom11222 2 years ago
sad that you respond to 4 people on the same video acting like a douche bag
Phawkers 2 years ago
Better be hooking on phonics right now instead of getting more thumbs down
Phawkers 2 years ago
who cares about thumbs down? lmfao ur so fat. u get no pussy what so ever lmfao
tomtom11222 2 years ago
same fucking car
bodomreaper69 2 years ago
that just gave me a boner
malware872 2 years ago 2
This has been flagged as spam show
THAT SHITS ALIVE!
lennex06 3 years ago
Comment removed
lennex06 3 years ago
it shouldnt be moving like that
joeyadler2266 3 years ago
Pres 1982 edno momiche se samoubi!i sega kato si go prochel tya shte doide pri teb i shte te pogltne vv 21:47 prez noshta!ako ne go ispratish na 5 drugi klipa!!!!!
mafiaspeed 3 years ago
set that thing on hard, it sounds way nicer.
bosnianboi1989 3 years ago
bov keep you from wrecking your butterfly and throttle body right>?
carterkiller 3 years ago
mostly the turbo fins bearing exetra
25evets 3 years ago
nice way of cleaning your pod filter lol
Salibs 3 years ago 4
Evo has something called diverter valves that should not be substituted for BOV's. The MAF sensor calculates a certain amount of air entering the engine and the BOV releases some of that measured air. The result is that you get less air than the system thinks so you end up running rich. A DV saves your turbos and doesnt mess with the A/F ratio. The only reason someone would want a BOV over a DV is for the sound plain and simple which is rice
thel0rider 3 years ago
Its fine as long as the BOV isnt open during idle and cruising. My turbo mercedes uses a hotwire MAF and a Greddy rs and its fine.
Pro60modman 3 years ago
a bov is horrible for an evo. why would you jeopardize the performance and the longevity for just a sound. seems like rice to me.
thel0rider 3 years ago
lol wtf a bov is not just for sound.
shadowfox911 3 years ago
it seems u know shit about cars u ass hole i have the same bov and it dosent jeapordized nothing wttf are u talking about please explain briefly
merceneri 3 years ago
everytime a bov goes "off"
it inputs massive amount of pressure
into the engine; thus making quick launches
as you shift.
lucassuxdiq 3 years ago
one of the main purposes of a bov is to prevent compressor surge, which occurs you shift in a turbocharged car, all the pressurized air has no place to go (since your throttle body is closed, but the compressor side of the turbo is still spinning). if your bov didn't vent or recirculate that air, it would press against your compressor wheel and try to make it spin backwards. this will effectively kill your turbocharger over time.
wasp010 3 years ago 20
said nicely. Bov do serve a purpose that is turbo cars come with one from the factory.
2006evoIX 3 years ago
@wasp010 is is possible to mount a bov to a cold air intake system?...i have a mitsubishi eclipse 3g with an k&n cold air intake system and im not sure if a bov fits to my cold air intake...cuz some people say that you need a super or turbo charger..but some people say it also fits to cold air intakes..
NEED HELP PLEASE
Eclipse03Babam 1 year ago
@Eclipse03Babam You would have to weld the BOV to your cold air intake and even then it wouldn't do anything but remain shut. There wouldn't be any air exiting the intake that would effect the BOV. You need a turbocharger for a BOV to have any purpose. Otherwise its just a paperweight.
wasp010 1 year ago
@wasp010 it doesnt try to make your turbocharger spin backwards. It just passes through the blades creating a chopping sound. If It tried to make the turbocharger spin backwards, the whole thing would probably grenade in about half a second with such massive loads.
MrSlowSkyline 1 year ago
@MrSlowSkyline The excess air will try and force the compressor to stop/flow backwards. It won't make it spin backwards instantly, but it will but needless pressure on it. BOV's weren't invented to stop a "chopping sound". Don't believe me? Seal your BOV shut for a year and see how long it lasts. After all it'll just make more noise right?
wasp010 1 year ago
@wasp010 i've had no bov on my rb20det for more than a year running 12psi and the turbos still mint condition
83Dirtydx 1 year ago
@83Dirtydx Your car is running a diverter valve then, which is essentially the same thing as a BOV, just without the cool noise that everyone wants.
wasp010 1 year ago
@wasp010 Wastegate??
OrcExile 1 year ago
@OrcExile What about a wastegate?
wasp010 1 year ago
@wasp010 I know this is older than jesus, but that's not what happens.
Compressor surge is more accurately named compressor stall. basically the compressor wheel tries to keep pumping air in and at a point the pressure differential is too great and air leaks through the compressor wheel. If you look at a plot of shaft speed over time during a shift you wont see it drop to 0.
tehbobstar 1 year ago
LMAO!!! NOOB
dynhamik 3 years ago
This comment has received too many negative votes show
your a fucking faggot
crf150yo 3 years ago
dude if you get it tuned there is nothing wrong with having a bov on an evo.
2006evoIX 3 years ago
yep nothing wrong, now on a STI, is a different story lol
Evo2nr90 3 years ago
i never ever seen the pipes expand that much o and is the fuel already mixed in and what car is it how many horses
tieontheweek 3 years ago
This particular blow off valve is so loud that you can literally see the air coming out!! Wicked cool!!
shavi6 3 years ago
Looks good but if your cars not over 500hp its not good to not recirculate the boost am I right?
xeno4ever13 3 years ago
It just depends if it has a provision for recirculation, and where the recirculated air would be dumped, if its pre- Mass Airflow Sensor you can run atmospheric with no problem, but if its post MAF, you will run rich, because the computer already accounts for the air that should have been recirculated
dlight88 3 years ago 2
Thats hilarious the BOV is blowing onto the air intake.
bigolsackapoo 4 years ago 5
fuck it more air for the intake lol
merceneri 4 years ago 3
yep way to get the cold air in
2high2aim 4 years ago 2
how much is sumtin like dat worth ??
tycekquad 4 years ago
haha you're going to blow off the filter
ITSASTI 4 years ago
Oh shit fucking crazy
solefiiiend 4 years ago
fuckin savage
yourtube1978 4 years ago
is that off ebay?
TalonTsiAwd1 4 years ago