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Even seen no dynos for any of the "CAIs" on the M Coupe, and mixed results on the M3 ones.
It seems the consensus among M3 community is that the upgraded elbow+drop in filter is the best option when combined with software. That seems to show ~10-15 HP gains up top, with no real change in the midrange.
For the various CAIs I've seen dynos ranging between -5hp and +10hp, so tough call.
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'08 Black Saphire/Black Z4 M Coupe
RIP Gretta: Blue Water/Lemon 135i. Died to save me.
-ChuckV
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