I had a forge bov on mine.. It was horrible for DD so i went back to the Metal mitsu BOV.. i also upgraded the stock WG to a FP wastegate. It was a great choice!!!!

 

What's the best/safest method for 'crushing' the bov? Petey T, where do get the recirc tial? All I've seen are the open atmosphere ones. I think a buschur MBC and new or crushed bov is in my future. I was looking at bov's and it was hard to find some that will hold over 25psi.

 

http://www.tialsport.com/prod_bv_Aq.htm

 

In order to use that beautiful tial I would have to get the v-band welded on to my upper IC pipe. Money is relatively tight right now and I'm looking for the cheapest way for a temporary solution to my issue. If that's what I have to do then that's what I have to do. Anyone tried the turboxs valves, especially the reversable one?

 

I know my boost issues have to do with gearing and rpm at the track as well, but say if I set my boost for 27psi and go out on the highway, I can hear the BOV sound like it is almost surging after 25psi and letting air through even at lower RPM's..When I get a new BOV I am going to put the dyno in drag mode and do an overlay of my boost logs and see if it makes a difference..My guess is it will not but I still think it leaks..

 

yea it's probably leaking, crush it!

I had my personal evo tuned for 28psi peak, then I crushed the BOV and it hit 33-34psi peak with no other changes, which meant it was leaking the whole time.

 

Do you just take a bell ping hammer to it, or a vice, or what other methods are there to crush safely? How far down do you crush from original height?

 

I saw a post on the internet where they used a vacuum gauge to measure opening vacuum pressure and then gradually crushed using a vice or Large c-clamp. I imagine if you crush too much the seam on top of bov could burst or maybe even too much spring pressure. Here is alternative method. I would like to know how these methods have worked for Evo drivers.

https://www.evolutionm.net/forums/sh...d.php?t=260029

thinking my stock 9 bov was not right I bought a used APS bov and it is not even holding 20psi

What about Synapse ? They claim 100 psi and use turbo sideconnection to hold valve closed

 

Just crushed it pretty good and went for a drive. Same results. I'm definitely thinking boost controller now.

 

other alternative to crushing is the Dejon leak stop kit.

I've tuned a couple evos with it and they work great.

Towards the bottom of the page:

http://all.dejonpowerhouse.com/edit/A-04.htm

 

It's already crushed but not all the way..Want something to laugh at?
Boost controll all the way in with a stiff spring..would spike over 30+psi with about 4 fewer turns from a roll..

 

get a Forge RS. I had the same issue since I got a meth kit, the forge solved it.

 

I just found a spring kit for the MBC on forge website for $15. I'll try the springs and if that doesn't work then it's definitely the BOV. Question- if I had shot throttle body shaft seals would my car be able to boost to this level of 25/26psi? Crap, I just realized the springs are for the BOV, not the MBC.

 

Go with an HKS SSQ BOV its the best no resurculation required holds as much boost asyou can throw at it lol

 

gotta have recirc