Evo 9 MR BOV vs Tomei BOV

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Mar 31, 2013 | 01:22 PM

#31

lescook

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From: fort wayne

will the tomei hold over 30psi with out any prob

Jun 9, 2013 | 06:39 AM

#32

lescook

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From: fort wayne

i just switch from the 8 to the 9 and love it im running 22psi and i have a buddy running 30psi and no problems

Jun 9, 2013 | 08:25 AM

#33

WRC-LVR

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From: Marietta GA

Quote:

Originally Posted by Steve93Talon

I tested a stock VIII and IX BOV, the plastic VIII held to about 14psi before starting to open, and the IX metal valve held about 24psi before the cracking point. Once I performed the leak-stop mod, they both held as much as my regulator would put out (75psi I believe). The only difference at that point was the fact that the plastic one always seeps a little air past the valve seat because it doesn't seal as well as the metal valve even when it's fully closed.

So here is the answer.....the IX holds 24 w/o cracking on the bench

I know I have had mine on since 2007 and it does fine at 25 tapering to 23 at 8000 rpm. On the Stock 05 10.5 MR turbo . All clamps are Tbolt. Plus there is no driveability issue period . If I needed more or thought it was limiting spool up then i would perform the crush.