BOV-Which sounds better

[thermal]

Nah dude. It has 2 separate flanges:
1) charged pipe flange
2) BOV flange (which is on the BOV itself)

You will need to weld flange #1 into the charged pipe, then flange #2 will (bolt) with the flange #1.

........which reminds me, if you order the TypeS BOV, it does not come with flange #1. It cost like $40.

I will take a picture of my BOV when I get home. Peace out....