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i cant stand the atmo bov. im going back to the stock one. is there anyway i can make it hold boost better?

i cant remember where i saw it in a thread but isnt there a little breather hole...should i block it up?

Edited by R33GOD
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Yeah take it off and block off that little hole.

And to make it hold even more, "adjust" up the spring tension by crushing the top of the bov in a vice. too crush it even more, tap in the top too a rounded bowl shape. It'll be super tight now, and will be able too hold your desired boost.

This is the hole to block. Use a screw/tape/hot glue/whatever.

post-28076-1191325229_thumb.jpg

It can be crushed to about this height. It'll collapse in it's proper order, just let the vice do its work.

post-28076-1191324937_thumb.jpg

Tap it on the top and round it inwards for even more tension.

post-28076-1191325146_thumb.jpg

You may experience flutter under certain conditions. Usually only under light throttle back offs when under boost.

I just crushed it till I felt it stop. I don't know if you can get solder to stick to cast. I used some tape folded over a couple of times.

You'll feel it when it can't crush anymore. The nipple will touch or bottom out and may bend a little.

Edited by KeyMaker
im gonna try n find something to block the hole off now and use my uncles vice tomorow and put it all back together. is there any downside to this or should i be all good?

Just make sure whatever you use isn't going to get sucked/pushed through.

Use a piece of wood with the vice to crush it.

You can use a ball pein hammer or a hammer and shifter to round the top in.

The only negatives could be the flutter that everyone argue's about. It only happens when you back off the throttle lightly when under boost. Gear changes and sudden back offs it functions normally.

It flutters under that condition because of the tighter spring tension, and the vacuum isn't able to pull the diaphragm up. Any aftermarket BOV does pretty much the same thing anyway.

Edited by KeyMaker

i tried the fan case screw. the actual thread is not tight in the hole but the head of the screw fits perfect. what i dont was put teflon around the screw and put thread locker just underneath the head of the screw. if that dosent work il try somthing else

I've came across a few different sized case fan screws.

These are the type I used - http://www.pccasegear.com/category83_1.htm

Unsure if they are identical to the ones I have but thats what they look like.

They were very difficult to screw in as it was very tight they were also super tight when screwing in to a computer case fan.

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