can you hear your BOV when rev? well i cant!

[civic92si]

hi im just wondering why i dont hear my bov when reving but when boosted you can hear it.. just wonder what cause it....

im boosting 5 psi.

t3/t4 turbo

 

[slowcivic E G]

only boosting 5 lbs, its probably gonna be tough to hear it, have you driven it yet? usually you will get a louder sound when its under load. and you're sure you have a good vacuum source?

 

[Jordan_n]

i hear mine and i only run 5psi

 

[slowcivic E G]

yes, also is it a cheap ebay type bov or a good quality one, i know i had an ebay one on my rx7 for about 2 days, and u could only hear it if the spring had almost no pressure on it.

 

[TiiM iiS l3eAsT]

i dont think you can hear it only when your actually driving and the car is under load.....when theres no load on the engine and your just revving it the bov will never go off.....

 

[Konig16]

it should go off you just have to rev it really high when its not under load to hear it. Eather way it should be louder when your driving.

 

[Tom]

i dont think you can hear it only when your actually driving and the car is under load.....when theres no load on the engine and your just revving it the bov will never go off.....

never, errrr wrong, you will still hear hit, however you have to put it under a higher load, meaning rev it high if your jsut setting, since it's not under load it's just not going to be as loud if your just setting there and revving it.

 

[civic92si]

what u mean by underload? sorry for such newb question. when i rev it i can feel air blowing off of the bov but not the sound.

 

[Tom]

under load, actual force being applied, basically being driven like you stole it, or just strolling about during normal driving and shifting.

 

[SlowTEC]

when you're under load you're actually in gear driving. it takes a longer time for your motor to rev from idle to whenever you let off the gas closing the throttle body. the fact that it takes longer for the motor to reach whatever rpm you let off at, means that the turbo is going to spool more and be spinning at a much higher speed than you can reach while sitting at a stop, which results in the louder bov sound because there's a LOT more air to let out of your intake pipes. make sense? lol

 

[civic92si]

oh...ic..but that suck..o well....its seem like when i go 2.5-3k rpm u can hear the bov but if i go 4k u can definitely hear it

 

[Tom]

more pressure being applied is why.

 

[SlowTEC]

depends on how much boost you're pushing and at what rpm

5psi @ 7500rpm is going to be a hell of a lot louder than 5psi @ 4500rpm

sometimes you just don't hear it much. the only cure is to hit boost more often

 

[usdm.ehtu]

Do you really need to run a bov at 5 psi? I thought it you only run it if your on 7 pounds or higher.

 

[Tom]

it's wise to run one regardless of how many psi your running, that is if you want to keep your turbo in one piece, and how many people do you know that are happy at just 5psi, cause i can tell you now, after awhile 5psi will start to feel slow, then you'd want to kick it up a few notch's and you'll really be needing a bov then.

 

[jdm98coupe]

it's wise to run one regardless of how many psi your running, that is if you want to keep your turbo in one piece, and how many people do you know that are happy at just 5psi, cause i can tell you now, after awhile 5psi will start to feel slow, then you'd want to kick it up a few notch's and you'll really be needing a bov then.

this is true haha because right now im on 6lbs and its is starting to get slow (to me) so im about to up my boost to 10lbs and see what kind of difference there is. but yea my bov goes off if i rev it to about 6k. just make sure you have a good vaccum source.

 

[Silver Bullet]

i wish i had boost =\ just give it a good rev and enjoy the sound

 

[ryan89crx]

revving just to hear the BOV? man, your rods are just begging to see the outside world...

 

[civhatch92]

revving just to hear the BOV? man, your rods are just begging to see the outside world...

haha..

I don't see the point in sitting and revving to listen to the bov.. just drive so you can listen to it and feel the boost!!

 

[civic92si]

no it was just a question that i have in mind.