[Thevesh]

Originally Posted by dtmurf

Maybe it's my research abilities but I can't find any technical info about this 'award-winning' Kompact EM series Blow-Off Valve. The award it won was the Performance-Street New Product Award at SEMA 2018 and it's for sale on many aftermarket sites but the supporting information is a direct lift from Turbosmart's web site which has no information other than it being plug and play.

I'm wondering about the OEM valve, is a plumb back or a dual port?

I understand the Eventuri intake is all about the bling but I'd consider it for engine dressing except I hate how pronounced it makes the blow off whistle sound (the OP's "great induction pressure "CHHHHHHHHHH" sound when you let off the accelerator quickly" isn't for me...a friend's STi used to drive me nuts).

If the OEM is dual port, would upgrading to the plumb back minimize the pop and whistle?

If the OEM is plum back, why does the Eventuri intake make is more pronounced, is it just because it's open?

Original is PB