More power

rogerlrogers said:
I have a 2006 z4 3.0i what’s the best way to bump up the horse power?

I’m guessing you’re USA based & your car doesn’t have the dual disa intake manifold the 3.0si has?
If that’s correct then fit the above :thumbsup:
Rob
 
Then fit a Supercharger. Once you are at 3.0Si spec, there is not much else you can do that is cost effective.
 
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