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Gun40t

Help turbo loud whine.. Lost of some power

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Hey guys ive got a horrible sound its a like skreik sound from my turbo on boost it make its bost target but sounds horribly I have got one loss manifold bolt, the turbo is missing 2 nuts which im.waiting to replace could this be the issue whats a good way to test for a boost leak cheers.

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sockets and a uni-joint and some access from the underneath for the hard bottom ones, top ones you can get spanners onto.

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Yeah I have unis and stuff and I can get the top 2 but do I need to do.from bottom.of car?

Sorry misreqd that thanks man ill give it a crack tonight I brough some m8x1.25 nuts I was told that's what I needed

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They are M8x1.25 studs for the turbocharger-exhaust-housing-to-dump-pipe studs.

 

The studs for the manifold-to-turbocharger connection are M10x1.5 on one end and M10x1.25 on the other (finer thread on the outside for better clamping pressure)

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Thank you very much for your help keith I will source some nuts today from the local nuts and bolt shop, hoping this eliminates my annoying sound maybe will help with less of a boost leak.
 

Would you recomend these as the stud kit for the dump pipe to turbo? 2188442757712ddfdfb8bd9e24e35f80.jpg

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Also have a question keith I seem to have a high pitched squeal coming on boost at around 4000rpm, sounds boost related ive had to cable tie my bottom intercooler hose because its been a *beep* and dropped below my bar can something like that affect boost noise if its pinched in about 8cm. Cheers brother.

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So tonight I brought the factory blow off valve to replace the stupid blocked off sh*t the previous owner had done I was hoping u could shed some light on where to find the vacuum line that goes into the top of the bov.

9ea8af0838920a9be70f97d8df3327de.jpg

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blocked off BOV, FTW!

but since you don't like it, the vacuum hose will come off a t-piece at the back of the plenum.

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it's hardly any lost boost if you're up it... it's manual vs auto that loses more boost (manual does) on gear changes... the idea of a BOV is to throw away all unused boost when you get stop accelerating, so I don't know what you want from it. :idunno:

 

Not sure why you'd think a dose sounds like "guna stall" but it sounds like your car has a different problem if it does actually make the car come close to stalling.

 

but if you don't like the sound itself, that's fine.

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and have a hobbs switch to get rid of spark during hte change to allow for flat shifting and the associated gearset to be able to flat shift without doing much damage? yep.

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