I have used tons of K&N cold air intakes on 996 and 997s with PROVEN dyno results. Read all my info and check out the links with the test results - http://www.vividracing.com/catalog/k...5-p-24313.html

 

Hello,
Here are my opinions (personal options only- don't misquote me) on the various options posed thus far:

-EVOMS Cold Air Kit: replaces the OEM airbox, and utilizes a Venturi-style intake. The airbox itself is shielded from the engine. Definitely adds some power. Cup Cars use this because it works. I use one, and I recommend it. Changes the sound on acceleration, especially the scream at 5,500 RPM's.
-Fabspeed: just a nice bright red rubber elbow and a cap to disable the Helmholz resonator. Whatever, not a big deal. Expect nothing different in performance or sound. The only difference will be in your bank account.
-K&N: maybe the biggest waste yet, no engine heat shielding, etc.
-X51: looks fantastic.
-Champion F77: looks even better. That's about all.


But HEY! Good luck, you've got options.

 

what you think about my set up. FABSPEED intake and BMC filter. I know there is no big difference in power between EVO and what I have but do you thing it would sound different with the evo intake.

 

Yes, the EVOMS definitely adds to sound. It's a terrific sound, and when you're on the throttle and hit 5,500 RPM's it sounds like a race car- really just screams!