As above,

My 09 sti sounds like it's a surcharger in boost.

I had the recirc valve off it last night could there be a loose pipe?

 

Does it whistle when it comes on to boost?

If it does it sounds like a boost leak.

 

Yes on boost very loud whine.

The pipe that goes under the recirc the clip that holds that is a bit loose

 

Video clip would help?

09 plate, is it out of warrantee?

Could be a number of things, but I suspect pre turbo issue, intake pipe split, jubilee come off etc.

Any mods?

Rob

 

Bog standard.

Bought it on Saturday from a dealer 250mile away.
Buts got 1 month warranty swell

Everything was fine until I had the recirc off last night.

Would the pipe that goes under the recirc if it was not mega tight would that cause the whine.

Just worried about it you know.

 

If it didn't do it before you had the recirc valve off but does now you need to recheck all pipework around there in case you've disturbed anything and tighten up and reseat anything that's loose.

Why did you take off the recirc valve?

 

Sounds like it needs to go back!

Can you upload a video clip and post it on here?

Does the noise appear on blipping the throttle under no laden/boost?

A supercharger noise is apparant all the time, as it's associated with belt driven/pulleys so if that's the case with yours and you have no loss of power it may just be that the fan belt or alternator is whining( hopefully)

 

Only does it under load.

Was going to fit a BOV but decided against it.

Its defiantly notna belt.

Will record it at lunch. Car doesn't really feel done on power.

 

To add

When reving the car there is no noise.

Driving under load its supercharged

 

Just realised you revised your post I read so ignore what I said about belts etc, the recirculating is as good as it gets for the job in hand, don't bother with a Chav valve

Sounds like the hose isn't attached properly. It a bugger to get on the underside with the OEM jubilee. Make sure it's secure and that you have pulled it off the turbo intake, this would account for the sound. If the little vac pipe had come off it would hiss on idle, and chatter through gears(compressor stall)

Revised the above.... had a bad typo moment (iPad) LOL

Rob

 

I think that's what haappend as I was ppulling on the pipe to get the BOV off.

Is it easy ti get back on.

Thanks for the help Rob.

 

To get everything seated properly it may be easier to take off the top mount to do it.

 

Cool will get on it tonight

 

Issue resolved. They Y pipe under the intercooler has a clip on it which was burst.

New clip on and all is well.

Car feels much quicker Thanks lads

 

So it was a boost leak. There is usually a noticable holding back, and a scream like fox bein shagged by a badger.

 

Aye she was screaming..... must of been like this from when I bought it lol oh well back in action.