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manifold coversion
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  1. General E46 Forum
    (Also posted this on BF). After a bit more power from my 328ci and had a look at the inlet manifold - it is restricted by the ports of the inlet manifold like the e36 328's. It seems you cant use a M50 inlet manifold becuase the m52tu is dual vanos. The most obvious thing to do is swap a M54...
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