Flutter noise - How?!?!?

[[R31][Silhouette]]

Hey Guys,

I've got a silvertop rb20det - I've asked this question before but never got a proper answer - does anyone know how to get the flutter (intercooler dose) noise

instead of the stock 'pssshht' noise?? Has anyone experimented and got results? People have said 'bigger cooler, more boost' but I'm pretty certain that's not the case!

Any ideas?

Cheers

[MSPEC]

my car does it well, remove bov and block up the hole! Easy!

[[R31][Silhouette]]

How do I remove the blow-off ?? Instructions please??

Will it make the car run any different ??

Cheers guys

[WHITE R32]

the sound u can hear is called compressor surge or compressor stall.... what it is is compressed air trying to come out of the air inlet on your turbo and hence trying to stop the wheels spinning... mainly cause u are using a small bov or no bov or have it set too tight.... this causes excessive pressure on your turbo and can cause premature failure due to excessive load caused by the stalling..... most cars will have a bit which is ok but if it happens alot and at high boost levels id look into getting a better bov....

basically what im trying to say is if u want the noise tighten up your bov or block it off though i dont advise this cause of the afforementioned circumstances.... dunno if that helps or not.... cheers Jon

[moo_r32]

what would you use to cover it up?

[MSPEC]

Steel, just make a cut out, this is not dangerous btw! Been running my car like this for 2 years without a bov at 14psi!

[[R31][Silhouette]]

Steel, just make a cut out, this is not dangerous btw! Been running my car like this for 2 years without a bov at 14psi!

Hmm.. so do I remove the stock bov - by undoing those two bolts? then take that off and put a steel cut out in it's position? Is that right??

I've never removed the standard bov before - so don't really know what to expect!

Cheers

[WHITE R32]

this is a very debatable issue as to weather or not it causes dramas with bearing wear etc ..... but after spending 2k on a turbo id hate to have a warranty voided by just wanting a "cool" sound.... its not worth it in my eyes.... but having said that ca18det's dont have a bov std and neither do alot of opther cars... but rb's have them for a reason and ill keep mine that way...

[[R31][Silhouette]]

Well considering my motor is stock... and running stock boost, I'm not really all that overly concerned about stuffing the turbo.. for now - I'll be very content with the 'cool' sound!

Cheers

[MSPEC]

yeah just take it off and then you need to block the two hoses up!

[jaqule]

BelGarien has a nice flutter affect in his BOV , he has a HKS SSQ and he has just removed the fins , I think he said , you may have to ask what he did exactly but I do know that he still has his BOV on

[Pandaemonaeon]

I found using different BOV's also had an effect. I'm running a Trust Type S at the moment, which will do it at low revs, no matter how soft it is set, yet when running a standard BOV, and another one (not sure what it was) there was none.

[jaqule]

HKS one was also only at low revs , which if all you want is to get attention that's all you need , without having to worry about potential damage to the turbo

My 2 % of 1 $ AU

[MSPEC]

Here is a pic of mine!

[sky^rkt]

mine is the same as mspecs. but i didnt remove the bov, i just put an aluminum peice inbetween the bov and the pipe. its just a thin plate, worx fine, dont notice any different conpared to when its taken off. also put a pod on =]

[evolutionMR]

get a front mount, use std bov and an aftermarket pod filter..

[ferni]

Didn't Denton do that steve and he blew his turbo

[MSPEC]

Nope, though its probably best not to do it on a standard turbo. I dont really mind who does or does not do it. Fact is I have always done it, for no real reason but its been fine. Benny boy at Race Pace aint fussed either way so nor am I.

[WLD747]

Flutter is cool, doesnt damage turbo as i have been doing it for a while as well. My blitz bov does this sound on low revs. Sound Cool.

[DentonR33]

Yer i did it and my turbo went bang probably would have happened regardless though as was running more boost.

I also did what steve did although i refitted the bov on top after i had put a steel plate over it. Then you have to block up two holes, a bolt works good on the smaller one and the end of a broom worked a treat on the other one. hehehehe weeeeeeeeeeee vromm chh chh chh chh