do i need my stock bov

[sr20dets13]

i was wondering if u still need a stock bov when you use a front mount

[SeVa-S13]

Unless you like compressor surge, a BOV/recirc valve is usually a decent idea.

[S13240]

If you're using an aftermarket bypass valve/bov with your fmic then no you do not need your stock bypass valve. Technically you don't need one at all, but you just have to watch out for compressor surge like mentioned.