blow off valves

[4drcivic]

which blow off valves make the sound that kind of spuders when blowing off like.. psh-psh-psh-psh but really fast. Also what type of blow off is the best type, piston type or spring type? thanks

[civicgsr_T4_60-1]

please don't get a bov just based on it sound. If you just want that, go with one of the electronic bov noise making things and don't waste the money on a turbo. The Tial and HKS are nice bov's, if you want a nice pshht, the greddy type s isn't bad. But the Tial under high boost sounds mean as hell.

[V00D00]

"please don't get a bov just based on it sound."

Why else do you think hes asking?

[civicgsr_T4_60-1]

I know why he asked, and i gave my reasoning for why I said what I did. So pretty much what your telling me is most of you just care about what your car sounds like vs. how it performs?

[V00D00]

nope i dont care if my blow off valve sounds like a bunch of howler monkeys beating on the cage at the zoo as long as it does what its designed for proficiently.
I didnt answer him because it sounded like he just cared about the sound.
That and the psh psh stuff made me crack up and press the back button.

[hondaturbo]

Are you sure that psh psh psh psh sound isnt just turbo lag? I dont know much but thats my guess.

[Neutrino]

Originally posted by hondaturbo
Are you sure that psh psh psh psh sound isnt just turbo lag? I dont know much but thats my guess.

the release of presure during closed throttle has nothing to do with turbo lag......

[civicgsr_T4_60-1]

Originally posted by V00D00
nope i dont care if my blow off valve sounds like a bunch of howler monkeys beating on the cage at the zoo as long as it does what its designed for proficiently.

LOL, exactly.

[90gs]

Originally posted by V00D00
"please don't get a bov just based on it sound."

Why else do you think hes asking?

off topic but your sig doesnt make sense, cars with exhaust are louder when they're driving with strain on the engine (in gear with your foot on the gas) than in neutral. so if they're driving along and you hear a loud noise its just because he has exhaust, not because he's revving at you.. i like the drawings though, they're good.

[Cronic]

The flutter sound your hearing is LACK of a BOV, most likely compressor surge. It's a BAD thing, and you don't want that. Although it does sound cool. :-P

I only use HKS or Tial BOV's. Personal preference, when in doubt, stick with companies that know their shit. GReedy, HKS, Tial. etc.

[neunan]

i think his question is perfectly legit. most any bov made by a reputable company is going to function well if its placed correctly...i would ask about the sound as well. although his 'example' did make me laugh. just my $.02

[funkdaflex1]

Position of the BOV doesnt matter when it comes to the performance of the BOV.

[Sluttypatton]

Actually there are BOV's that make that fluttering sound that he describes, that sound probably isn't compressor surge. The fluttering sound is a result of sequential blow off valves. I don't think the make really matters, as long as it is a sequential setup.
The sound of a turbo without a BOV isn't so much a fluttering like he describes, but a high pitched, whirring sound. I have to agree that you shouldn't buy a bypass valve solely on the sound it makes, buy one that suits your needs.

[Cronic]

High pitched whurr? WTF?
Everyone, as your homework for today, disconnect the vacuum from your BOV today and drive down the street, spool up, and release. Please describe this sound to the class when you return.

End yourself. Sequential BOV's (made specificly by HKS IIRC) sound nothing like compressor surge.

[neunan]

re: position of the BOV, youre supposed to put it as close to the intake manifold as possible because thats where the pressure builds up. and yes, of course do some research and make sure youre getting a good performer, but i just re-read an article in SCC last night where they tested about 20 of them, and pretty much all of them performed the same. there was one...i think it might been the Blitz SS one, where they said it was the "catcall" of the bunch, meaning it didnt perform as well as the others but looked and sounded better. and they hailed the gen 1 DSM as a good standby. ill check on the catcall later