A cold air on the a90 platform really doesn't add much power until you're at the bleeding edge of Hp. They do sound cool though. and with enough mods you could see some compounding hp gains.
On dyno when you open bonnet your test is not same as when you drive with closed bonnet. The air is more so of course you get few hp extra , in reality these intakes are not good for hp gains they are only good for increased airflow which is restricted because of the heat circulating under the bonnet, which in turn will reduce your hp. Most you gain is 1-6hp proven, and the sound is cool as well i love the flutter sound with the install.
