I searched but only found relevant info on backfiring. I have the turbosmart compact and on the softest spring setting.
If you have a flutter issue please include which BOV you have.
If you have corrected this issue, how did you fix it.
This is why I'm concerned (from turbosmart):
The "flutter" noise reported by many excited enthusiasts may sound good but is actually very unhealthy for the turbo. The "flutter" occurs when upon shutting the throttle, air caught between the free-spinning turbo and the shut throttle. The consequent back pressure forces the air back through the turbine blades. This process, more commonly called "cavitation" places enormous loads on the turbo and can lead to premature wear of the turbo bearings and other load-bearing components. The cavitation or "flutter" can be fixed by either fitting a blow-off valve onto a system that hasn't got one, or making sure the blow-off valve is matched to the output of the turbo and is not working outside its flow capacity and ensuring the blow-off valve is set up correctly.
If you have a flutter issue please include which BOV you have.
If you have corrected this issue, how did you fix it.
This is why I'm concerned (from turbosmart):
The "flutter" noise reported by many excited enthusiasts may sound good but is actually very unhealthy for the turbo. The "flutter" occurs when upon shutting the throttle, air caught between the free-spinning turbo and the shut throttle. The consequent back pressure forces the air back through the turbine blades. This process, more commonly called "cavitation" places enormous loads on the turbo and can lead to premature wear of the turbo bearings and other load-bearing components. The cavitation or "flutter" can be fixed by either fitting a blow-off valve onto a system that hasn't got one, or making sure the blow-off valve is matched to the output of the turbo and is not working outside its flow capacity and ensuring the blow-off valve is set up correctly.
