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93 Civic HB SI, 95 Civic HB CX
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BOV won’t be used, if possible adjust to closed position
Why? Do you like replacing turbos? You'll need at least, or over 20psi with that turbo to hit your 350whp goal since stock cam.

20psi+ with no BOV? Compressor surge is going to destroy the thrust bearing in the CHRA after not a long time.
 

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Registered
93 Civic HB SI, 95 Civic HB CX
Joined
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2,661 Posts
I’ve been told that it’s just a myth as the compressor wheel is spinning so fast. Got a few mates who block their BOV’s off with zero issues yet. However I will look into it and may use the BOV, thanks for pointing it out. (This is my first turbo car ever, so I’m still new with it all)

Also my turbo has anti-surge. I know it’s not meant to replace the BOV, just thought it was worth mentioning :)

You wanna talk about myths? Anti surge.

It doesnt mean it WON'T surge, just that it is less likely. You can't stop a centrifugal compressor from surging when conditions are right for it to occur. You can only employ tricks to help prevent it from happening more often, like clever compressor inlet geometry, OR, a blow off valve lol.
 
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