Crushing the BOV Options

[KOU In3]

Anyone done this? I'd planned on using the stock one until I out boosted it. I've got an extra one though and was thinking about crushing it. Is it just a matter of putting it in the vise and crushing it down the 3mm until the cap is even with the nipple?

[awd4kicks]

Hey Hey! Don't be calling me dirty names like 'Engineer'! J/K

This dodgegarage mod simply keeps the boost pressure from building up under the BOV diaphram. At least this is the case if you don't hook it up for quick release mode. Which I don't. I like the stock-like feeling when it's not hooked up to boost pressure. In fact I didn't even go to the trouble of hooking up a hose barb to the new access hole.

First of all your plugging the small access hole in the bottom of the BOV so that boost pressure in the UICP doesn't push up on the diaphram. This removes any extra forces besides engine vacuum to work against the BOV's spring. This means the spring will hold more boost.

Second of all you need to add an additional access (or vent) to the under diaphram area. This is really just to allow the diaphram to move freely. It's kind of like having a small vent hole in a gas can to release vacuum build-up as you pour the gas out of the can through the large hole.

Hopefully that helps, but if not I'm sure that Nate can throw a couple engineering words at you like 'sampling' and the like.