Bov

[stiscooby]

hey guys, this new kid got an sti a couple of weeks ago and his g/f recently bought him a bov. well, i was hangin with him tonight and he kept hearing this flutter noise. first off, the bov is not a name brand, but looks sweet. it sounds pretty nice, too. well, he asked me to take it for a test drive and when I was just getting on it slightly and then shifted, it would flutter rather than blow off. if I wanted it to blow off, I would have to be up in a higher boost level. The whole thing just seemed weird. what do you guys think??
Also, he use a bottle cap to plug up that hose and then clamped it to stay in place. do u think that might be the problem? Well, the car ran pretty good, so, im not to sure. just curious what you guys think.

[javasti]

well lets diagnose the flutter noise.. its called compressor surge. Basically when the throttle body closes, the compressed air in the charge pipe is not being vented (or recirculated) so it makes the compressor wheel on the turbo spin backwards. This is very bad and can cause damage to the turbo over time. I suggest that you suggest to your friend that he immediately replace the bov with the stock bpv.

Now the bottle cap/clamp idea. Very bad... what if the bottle cap found its way in the compressor? The clamp became loose, the bottle cap hits the compressor wheel, either the turbo breaks or the bottle cap somehow makes it to the throttle body.

[HKSWRX]

Go Dr. Java!

[stiscooby]

ok, thanks Dr. Java haha. i will definitly tell him.

[fadedSTi]

when it fluttered, did the car shake?

[stiscooby]

na, the car didnt shake. i mean it drove alright.

[fadedSTi]

na, the car didnt shake. i mean it drove alright.

if its surge, you feel the car shake when it flutters

[stiscooby]

i'll have to ask him if he notices it. he said he has only had the thing on for a few days.

[fadedSTi]

i'll have to ask him if he notices it. he said he has only had the thing on for a few days.

it may just be a really shitty bov :lol:

[stiscooby]

yea, he told me kis g/f got it off ebay for a "goog" price. so yea, i would have to agree with you on that one. Well, he just called and once he gets back from school he is gonna put the stock one back on. I havent really looked into them, but are the gfb bov's good? ive heard some good and bad about them. Hell, everything has a good and bad, so i dont know. what do u have james?

[fadedSTi]

yea, he told me kis g/f got it off ebay for a "goog" price. so yea, i would have to agree with you on that one. Well, he just called and once he gets back from school he is gonna put the stock one back on. I havent really looked into them, but are the gfb bov's good? ive heard some good and bad about them. Hell, everything has a good and bad, so i dont know. what do u have james?

gfb's are good. i have the WORX and love it, no issues in over a year

[stiscooby]

i couldnt complain about mine, ive had my hks for 9 months with out any problems.

[AvASTi]

i have the hks ssq bov and has been working fine for 4 months. i hate ebay its such bs too many problems for me. im still waiting on my springs??????!!!!!!!!!......

[javasti]

worx bpv here

[00eclipseGT]

Hey Matt its me josh with the talon. Randy told me you posted this on TR so i figured id come check the thread out. As Matt has said it drives fine, there seems to be no shaking whatsoever and it idles just fine. I warned him about getting a offbrand BOV as hed just have to replace it to get one that actualy works well.

He took me for a ride and it never blew off until the higher boost levels even with the intake thing not fluttering. Im not sure at all what it was but like matt said the car runs fine, there seems to be no problem so i was lost.

On a side note, you goin out to QSL tonight matt? Ill be there.

[SilvRBullT8]

matt u heard my gfb last night duringthe exhaust fiasco......but yah i havnt had problems with it....it sounds tight too

[rv7]

The stock BPV is the best "BOV" that you can run on the STi. Don't waste your money on a BOV unless you need one (i.e. you are running lots of boost and your stock BPV won't hold). They make your car run worse (unless you get tuned for it.) If you want to hear the "cool" noise, simply hack your intake silencer. Again, a BOV on an STi will do nothing other than make some noise and make your car run rich between shifts. I'm surprised that nobody has said this yet. A classic example of "If it ain't broke, 'fix' it till it is."

[I'm Slow]

it may just be a really shitty bov :lol:

ding ding ding! We have a winner!

[I'm Slow]

The stock BPV is the best "BOV" that you can run on the STi. Don't waste your money on a BOV unless you need one (i.e. you are running lots of boost and your stock BPV won't hold). They make your car run worse (unless you get tuned for it.) If you want to hear the "cool" noise, simply hack your intake silencer. Again, a BOV on an STi will do nothing other than make some noise and make your car run rich between shifts. I'm surprised that nobody has said this yet. A classic example of "If it ain't broke, 'fix' it till it is."

also a good point