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-   -   MBC removal help (http://www.wrxtuners.com/forums/f75/mbc-removal-help-30047/)

prescottn6ft7 01-02-2011 03:51 PM

MBC removal help
 
Just purchased a used 2005 WRX with a MBC installed that I would like to remove. I want to return the engine to OEM as possible. What would the parts assembly I need that runs from the flange just under the throttle body to the wastegate actuator? Is there somewhere other than eBay I can find O.E.M. parts like this online? I really need an O.E.M. bypass valve as well the car also came with a G.F.B. atmospheric BOV that I want gone immediately. The car atm is boosting way too much in 3rd gear running very lean and throwing check engine lights like a Christmas tree. Please help the new guy.

Hondafan 01-02-2011 10:02 PM

If you can't find a factory BPV, you can get something like Perrin's Recirculating BOV (BPV) and it will do the same thing as the factory BPV.

I have no experience with the rest of what your car has, so I'm sorry I can't really help you there.

newtothegame 01-02-2011 10:47 PM

Check on NASIOC.com for used parts like that (if I were in the states I would send you mine). Stay away from the Perrin BOV (had one and its an awful design). I have never messed with an MBC, but try looking up install instructions for one (via google) and see if you can do the process in reverse to return your car back to stock.

turmic 01-03-2011 01:19 PM

[url=http://www.cobbtuning.com/info/?ID=3482]CobbTuning.com - How Subaru’s Factory Boost Control System Works[/url]

That link should help you out a lot.

Hondafan 01-03-2011 11:22 PM

[quote=newtothegame;254881]Check on NASIOC.com for used parts like that (if I were in the states I would send you mine). Stay away from the Perrin BOV (had one and its an awful design). I have never messed with an MBC, but try looking up install instructions for one (via google) and see if you can do the process in reverse to return your car back to stock.[/quote]

Thanks for the correction. No intention to lead you in the wrong direction. My bad.

newtothegame 01-04-2011 11:30 AM

[quote=Hondafan;254937]Thanks for the correction. No intention to lead you in the wrong direction. My bad.[/quote]

Its alrite. Im just speaking from experience. The design is simple, and thats the problem, too simple. Once you adjust the spring tightness, it can/will work its way loose, it can cause your tube (which attaches to the top of the BPV) to twist and get kinked, or just a PITA to deal with, you can run into clearance issues also. If you want an aftermarket one, look into GFB, TurboSmart, or of course Cobb.

basco 01-04-2011 01:46 PM

+1 to turbosmart

newtothegame 01-04-2011 10:59 PM

Heard great things about them. They were going to be my next choice (when getting rid of me Perrin), but Cobbs came out.

midniteblack 01-07-2011 07:40 AM

If the car is tuned for the mbc and other mods(which i hope it is). Make sure you're getting another tune when you switch back to the stock parts. Do not drive your car hard with the over boosting and running lean until you fix the problems. You're car is not happy.


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