Of course a BOV is going to prolong a turbochargers life. It is what they are designed for. If you block up the BOV on a Legnum/Galant you still wont get bugger all flutter. There are many other things that contribute to flutter.
Some race cars but more commonly drag cars do not run BOVs because they only operate then there is negative pressure from the throttle closing. How many drag racers do you know that take their foot off the pedal when they are going down the quarter? Also, a BOV on a drag car is just another thing that can leak and cause problems.
Some race cars but more commonly drag cars do not run BOVs because they only operate then there is negative pressure from the throttle closing. How many drag racers do you know that take their foot off the pedal when they are going down the quarter? Also, a BOV on a drag car is just another thing that can leak and cause problems.