How much boost can the stock engine handle reliably w/ BNR S3?

[Bobby]

Hey guys currently running 20psi and wanting to turn it up. Just wondering what the safe amount of boost with stock internals is with the BNR S3? Thank you!

 

[SharksInSpace]

You'll run out of fuel before you reach the stock block power danger zone. Send it.

 

[Easter Bunny]

Mazda designed and built these motors to make 263 horsepower. Keep it around there and you should be good

 

[Al3xRats]

Hey guys currently running 20psi and wanting to turn it up. Just wondering what the safe amount of boost with stock internals is with the BNR S3? Thank you!

The condition and health of your motor would be a big factor to consider. When I was stock block I had a 93 map and a meth map where boost targets were 21 and 22 psi.


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