I just installed my Forge 100% Atmo. BOV. I took a test ride with my MBC on set at 15.5 in 4th at WOT.
If I shift into 3rd and go WOT to create boost pressure and let off the gas the BOV does not vent, and I get some sort of fluttering sound. But if I go to WOT in 3rd and then shift into 4th it vents and sounds great.
My boost gauge shows it is holding the pressure fine, and I do not hear any leaks under the hood when reving the engine.
What is this fluttering noise?
Is something wrong?
Is this bad?