When the turbo whistles it sound a bit gravely ??? I have a scorpion exhaust fitted. It's running fine not using any more fuel or using any oil. It's still boosting ok and there's no smoke just a sound that's really bugging me !!!! You can hear it even on light throttle when the turbo comes in. Any ideas please ?? It's booked in the garage on Monday where they'll be taking the exhaust off and have a really good look for any problems
