richglanza
Member +
when i nail the glanza, from about 5thousand rpm onwards i get a whistling noise any ideas as to what it might be
whistling nng noise
- Thread starter richglanza
- Start date
richglanza
Member +
i dont think so if i am its hardly noticable
Adam_Glanza
Member +
sounds like leaking exhaust to me
thats wat happened when my decat was coming loose a tiny bit!
start it up and have a smell and feel around by the cat to mani joints etc
thats wat happened when my decat was coming loose a tiny bit!
start it up and have a smell and feel around by the cat to mani joints etc
Monkfish
Member +
A nice theory, but surely if the bearing is that knackered the compressors would vibrate about and shit themselves, not accounting the huge plumes of smoke that would be belting out of the exhaust due to the failure of the oil seals?
dac69er
Super Moderator
it aint theory mate. my turbo i had on my car when i got it was the same. its something that happens as the turbo starts to get worn out naturally.
scott_glanzav
Member +
mine sounds like a banshee lol and iam lucky 2 get 20 mph at the mo cant get prop look till the weekend but nearly sure its leakin turbo 2 mani.but didnt think it wuld make my car loose that amount of power.
Shooting Starlet
Member +
if its whistling and lack of performance , then more than likly a split boost pipe ...... check your joiners on fmic/tmic. i dont think you would find it that hard to accelerate if it was the turbo (unless seized) but then its unlikely the car would start down to too mcuh back pressure
scott_glanzav
Member +
no all the pipes seem fine but i cant accelerate 2 much as the noise gets defining.
HutchGlanzaV
Member +
Mine whistles on boost too, only started doing it after my fmic was fitted. A guy on here (can't remember who) told me the the autobahn fmic's make a whistling sound on boost, is that right? I'm not losing any performance that I've noticed either.
Monkfish
Member +
I stand corrected!
You'd be surprised. I had a crack in my manifold, was only boosting to 0.5-0.6 bar rather than 1.0 bar and lost 30 odd BHP. Check for sooty marks around the manifold. Also check the head-manifold gasket, manifold-turbo gasket and turbo-downpipe gasket. You might want to crack the downpipe off and just check that there is no damage to the exhaust impeller or wastegate. Mine exhaust impeller shit itself and the result was no boost and a supercharger like scream.
It's possible if the fins are small in the FMIC. I wouldn't rule out a pinhole in the FMIC or pipework though. It might not be enough to loose pressure or power, but it could scream when you force ~1bar through it.
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richglanza
Member +
thanks for all your advice lads i'll have a look at the weekend