We pressure tested the stock manifold to over 10psi with no failure. I can't say every manifold will do the same, however we have options. We have a CNC'd intake plenum flange already made along with a pile of fab components if the stock plenum decides to give out. I also plan on carbon fiber wrapping stock plenum as another possible option.
02 M3 - Maximum PSI S2 turbo kit - email@example.com, stock motor, stock ECU, first in the 9's
97 M3 - Maximum PSI turbocharged - firstname.lastname@example.org, stock ECU, first in the 9's, first in the 8's
16 M3 - Under the knife
BMW SOB's turbo E30 - 9.20@157
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