You can put on an intake or exhaust without any other modifications.
The AEM v2* is supposed to give good power gains, and is supposed to be realy easy to install. The downside is that it tends to be fairly expensive.
*I just checked the AEM site and it seems that the v2 has not yet been developed for the 06 si
What type of sound are you looking at for your exhaust?
Last edited by TJ213; 10-30-2006 at 03:26 PM.
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