BOV sound

[whistla]

If the wastegate (integral or external) is on the exhaust side...

And the build up air/pressure is on the intake side...

Then... How does the pressurized air from the intake side get to the exhaust side without going through the motor because you have lifted of the throttle?

lemmy try

when u lift off the throttle, build up of pressure happens on the intake side, vaccum line (to register boost pressure) to the wastegate registers pressure pushing on the wastegate diaphram opening it up

but, when we were dyno tuning my car i didnt notice any evidence of this happening while i was watching the wastegate actuator

[BIGBLOCKR31COUPE]

BTW my comment to drifto was re the bullshit. I must admit that I didn't read his whole post at the time. I have now read it and he seems to have confused wastegate with BOV in his first paragraph.

R31Nismoid you are right to be confused by his post.

[BIGBLOCKR31COUPE]

The source of the flutter is very simple. It is air trying to pass back past the spinning compressor wheel. It is heard through the induction system, not the exhaust. Like I said, VERY SIMPLE.

[druzilla32]

Get a metal intake pipe from a pod filter.................................

[whistla]

Get a metal intake pipe from a pod filter

that makes it alot more audible as iv noticed

[druzilla32]

that makes it alot more audible as iv noticed

yep, my mates rex didnt make the flutter noise at all, then as he got the fmic he also got that metal pipe... Now it flutters... His pipe also has a 90 degree bend in it which will make the flutter more noticable.

[R31Nismoid]

BTW my comment to drifto was re the bullshit.

im well aware of that

considering the amount of :bs!: on the forums... drifto did well in his post i think

but james... opening the wastegate no worries, but what exhaust is it bypassing if the throttle is shut?

yeah, a little bit... but by no means a lot like an RB at full song

and go the metal intake pipe, it rocks.

[redline2003]

i say leave the flutter noise for the vls, from wat i know, even if the 'flutter' noise does not damage the turbo(which has yet to b proven), it WILL induce MORE lag than wat the car had wif the factory BOV. it will be especially noticeable will coming on boost and on gear changes, thats y cars hav BOVs to reduce turbo lag, now if u wanna sacrifice that for a pigeon like noise(i dont c why it is so popular) than thats up to u, but i for one prefer a solid pssshhhh.

[druzilla32]

again...

get a metal intake pipe.

it will not damage anything and will make the noise.

i love the sound its all personal tho i guess

[R31Nismoid]

so no-one can enlighten me on my problem above?

drifto ????????

[BIGBLOCKR31COUPE]

Nismoid - I think the BS may have dried up by now and been blown away by the strong winds we've been getting in this thread.