LaSkt9

my set up is stock turbo greddy fmic and apexi box

anyway i recently noticed that if im making low pressure 1psi or less and i shift at a lower rpm it sounds like a jehovah is under my hood. if i make more boost than that or i shift in the upper rpm range my bov works just fine.

has anyone else had this problem?

jdmsuper7

iTrader: (1)

You don't have enough pressure to operate the blow off valve, yet the manifold is still at a higher pressure than the outside air. Hence, pressures want to equalize and you get a backflow through the turbo. Its not going to hurt anything. Don't worry about it.

LaSkt9

alright cool thanks