folks with MBC's

[FE3-323]

Curious as to who uses MBC's & if they have any knowledge about a vent hole in some designs.

I picked up a MBC & it had a pre drilled hole supposedly for a vent hole. I can't see that making any logical sense, so i filled the hole. im wondering what peoples thoughts are on that? boost would come in open the ball/spring then go straight to the wastegate. would it hold the wastegate open after it reached the present PSI & stay open because boost has no where to go? or does it have somewhere it can go? very curious as to that.

Ryan

[Lex]

The reason the vent hole is there is to prevent boost spiking. It allows for some air to flow in and out of the casing making it for a smoother reaction of the ball.

If you see lots of spikes with your MBC, unplug the hole.

[BuGS]

Ya, ditto for the whole. Lex knows his stuff