Beep Noise On Boost?

[madmoomoo]

hey lads and lassies,

Just a quick question: i have a relatively stock r33 ('93). I recently installed an intercooler and a bleed valve. I've got the boost set on about 10psi at the moment.

What i've noticed though, is that when boost goes over about 7psi, i can hear an electonic beep, which appears to be coming from either under the bonnet or in the drivers footwell...?

I've really got no idea what this would be, it's a single-pitched beep, which only continues with the boost above a certain level, then stops once i take my foot of the accelerator.

I'm slightly concerned that this could be some component telling me it's not happy.

Anybody know what i'm talking about?

I'd really love some help on this one...

thanks!

(series 1 gtst, stock ecu, blitz pod, hks bov, and aside from that she's stock. stock fuel pump, but probably should be upgraded soon anyway).

[Spunky Munky]

although I am not 100% sure, but I've heard that some Skylines (imports) from Japan come with boost/speed limiters. Hence, if you bost your car up to a certain level it actually beeps to let you know that your performance has been limited.

Secondly, some aftermarket ECU's (not sure if you got one) may beep when there's a malfunction of some sort in the management of fuel, boost, airflow, vacum etc in your car.

Hard to say, you will need to see a mechanic to be sure as it does not sound too good. I wouldn't leave it too long.

A mate of mind started getting weird sounds from his engine bay, left it thinking it was nothing serious and now he's blown his turbo - not suggesting you're is this serious, but would definitely get it checked out asap.

good luck

[Kinks]

it's a warning noise saying that you are running low on boost juice now that you're on 10psi. get a mechanic to top it up or you might run your turbo dry and damage it.

seriously though, I have no idea