A few of the pre-order s.flos have gone out and I'm one of the lucky few to have received and installed it. The install was easy and fitment was great.

I'm particularly picky about intake noise; I love the sound of induction honk on a N/A motor but really dislike the sound on F/I setups. I'm pleased to say that under normal driving cirumstances you will not notice any difference.

You can hear slightly more whine in certain situations; such as at heavy throttle with low rpms. In this instance the exhaust is quiet so you can detect a bit more whine. I mean the stock intake tube has two resonators for a reason! As the RPMS rise the sound of even the stock exhaust overcomes any additional noise from the intake. I should note that this is only with the stereo off or at very low volumes. If it's a louder setting or you have an aftermarket exhaust you won't hear a thing.

As far as performance difference I really can't honestly say I notice more power, but I also didn't expect to. I do notice a slight difference in throttle resonse which I attribute to the reduced intake restriction. Specifically previous to the installation in the 2000-4000 rpm range i noticed much more of an "on/off" feeling of the throttle. If you were light on the throttle there wouldn't be much acceleration and as you depressed further you would feel a bit of a surge. Now the power seems to come on smoother even during light throttle-> heavy throttle depression. It seems there is less surge as there is more power on tap at a less throttle.