Intake noise /no whistle

[aussier33]

My previous ride was a mazda 626 turbo and when you gave it stick you could really hear a whistle on full boost but the intake airbox was stock with my new r33 gtst it has a hks pod intake and i cant hear a whistle more like a roar when change gears bov whoosh ok from hks ssbov how much is normal as some people talk about ticking and the like all i can hear is loud roar boost shows 7 psi stock and car does fly but i am concerned turbo suspect

only had car fews days and still under warranty so want to know.

[dabigbolf]

well i got mine started up for the first time, and opening the throttle a little bit. You do hear a bit of a roar, but you can also clearly heard the turbo working.

Haven't driven it on the street yet.

However a mate with an rb25 has just a k&n airfilter and it really gives a healthy induction noise.

i dont think its much to worry about. if the cars drives the way it should, a few sounds shouldn't bother you....

[Jay95R33]

I found that when I put on a mild steel dump and front pipe I could hear the turbo wind up much easier.

Maybe the stock dump muffles the sound somehow ?

J

[dabigbolf]

well the stock dump pipe does have that terrible design for when the wastegate opens the gases go directly into a wall, and have to divert.

But i couldn't see how that would effect noise.

If you really want a loud on boost type sound, replace your standard rubber induction hose with alloy piping. You will notice a difference in sound.

Or maybe try changing air filters to a big K&N.

Do you have a 3 inch exhaust??

could be a number of things

[R31Nismoid]

mmm... mine doesn't 'whistle' as much.

Just sounds like a massive hoover. (without the motor noise)

Mine just sucks on full throttle and once i hit my full boost (4300rpm) at 9psi ATM... it goes more quiet and i just hear exhaust screaming.

Something to do with vacum or something i heard.

But at low throttle just crusing i can here a nice turbo whistle.

I have a t04e BTW.

the ceramic turbos sound different.

[akeenan]

some peoples r33's you can here the turbo spooling etc etc others you cant......ive been in quiet a few different r33s.. thankfully in mine you can

[R34GTT-R]

From what ive heard a Whistling turbo is sign of it being unhealthy.

[WazR32GTSt]

whistling and sucking are not the same noise in my opinion

sucking =

whistling =

[aussier33]

Regards my Exhaust I have a 3 inch mandrel bent straight through with s/s super cat muffler and i did get it dynoed today and the guy said its just induction Suck now at 11 psi with bleed valve controller bov is louder than ever but 165rwkw so am happy.

[dabigbolf]

if you want it even louder ditch the rubber induction hose, and go for an alloy one. might attract unwated attention if you know what i mean.

[R31Nismoid]

whistling isn't bad.

mine does it on half throttle as the turbo is spooling but not making any boost to get the sucking sounds going to drown out the spool noise.

[MotoX]

whistling, you will find it happends when you remove the air filter.

ive seen a few brand new soarers ect, hige top mount turbos no filters, and god they scream. it all depends on what air filter you have, boost amounts how fast you are going.

i find that about 230 i cant hear the turbo as much.

[Guest RedLineGTR]

get a hks foam pod and ya will hear everything...or just run it without a filter to get the noise ya want,