Originally posted by wworm
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Finnish guy made comparisons with m54b30 intake cam and m50/m52 intake in NA engine. I didn't find the graphs anymore, but with m54b30 intake cam there is only about 5hp difference between m52 and m50 intake. (not the 20-25 difference as there is with stock intake cam). And with m52 intake + m54b30 cam, you get +10hp and +20 Nm at 4000 RPM compared to m50 intake. Also the torque peak start 1000 RPM lower with m52 intake.
So conclusion: With 100% stock m52b28 engine, you get 20-25 hp more with m50 intake at top end (you lose same amount of low end torque). So if you keep your engine revs high, that is good mod. But if you have better cams in your m52b28, it's better to have stock m52 intake.
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