Do I need to upgrade the stock MR BOV With the Greddy RS BOV with the 57 tirm? It seems like the car runs a lot better with the metal MR BOV compared to the Greddy BOV. Any help would be appreciated.

 

how much boost are u running? yea the MR BOV is badd ***, but it can only hold 25-26 psi

 

23 psi

 

You are fine with 23psi. After 27psi or so its time to upgrade.

Forge RS FTW!

I don't like the greddy because of the fluttering.

 

You cant say that. A friend did a few test with them. He posted a trhread here somewhere. He tested 2 9 dv and 1 jdm mr valve from grouppe-s All 3 held to 30-31 psi. I personally would use a forge for high boost