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Since I removed the turbo and sent it off to AET for a rebuild I have been getting a low pitch whistling for the first few times the turbo spools up.It happens a couple of times and then goes away,whens things start to heat up
Any ideas chaps?
Rob
Ragussa green avant RS2+ spec
Racing blue Octavia VRS mk2 estate-Remapped now to 250 bhp
Audi coupe gt-slow as hell but loads of character-sold
First drive of the day I have the same whistle, and then it goes away when it heats up. That was on my old S4, but I don't think I've noticed it on my current one.
'93 Audi 100 Avant - R.I.P
'92 Audi UrS4 Avant - SOLD
'93 Audi UrS4 Avant
'15 Audi A7 quattro 3.0 TDI
Mine did it too and it sounded like a laggy supercharger. Although since it came back from the coach builders, it's stopped...they didn't touch the engine. :/ I figure the turbo might be on the way out.
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