As lots of people have said previously in this thread, the fluttering is compressor surge, and it’ll shorten the life of your turbo. When the throttle plate closes each time you shift, the turbo is still creating boost. That boosted air slams into the throttle plate and bounces back through the whole intake system until it hits the compressor wheel.
You shouldn’t be able to blow through your BOV’s inlet port (the large port that connects to the 3000 pipe) when there’s no vacuum being applied to the BOV’s vacuum port. When vacuum is applied to the vacuum port, you should be able to blow through the inlet port.
Back in the mid-to-late 90s when I was part of the 5.0 Mustang community, there were a lot of people who installed a centrifugal supercharger and no BOV on their 5.0. You’d be surprised how many of them thought that fluttering sound was really cool, no matter how many times I tried to tell them what that sound actually was and what it was doing to their supercharger. Oh well…I guess you can’t help people that don’t want help…:3d_frown:
You shouldn’t be able to blow through your BOV’s inlet port (the large port that connects to the 3000 pipe) when there’s no vacuum being applied to the BOV’s vacuum port. When vacuum is applied to the vacuum port, you should be able to blow through the inlet port.
Back in the mid-to-late 90s when I was part of the 5.0 Mustang community, there were a lot of people who installed a centrifugal supercharger and no BOV on their 5.0. You’d be surprised how many of them thought that fluttering sound was really cool, no matter how many times I tried to tell them what that sound actually was and what it was doing to their supercharger. Oh well…I guess you can’t help people that don’t want help…:3d_frown:
