Took this afternoon to install the K&N short ram intake, the typhoon kit I believe. Installation was simple, just took me a few minutes longer to scratch my head at the horrible directions. They're incredibly brief and the pictures are small and in gray scale which makes them useless. But generally a pretty basic installation.
The sound is pretty awesome, it's very loud. If you're looking for something mildly louder then stock, then this is not for you -- it growls incredibly loud. I didn't necessarily want it to be this loud, but then again, I'm not hating it either.
This didn't help my low end, but anything after 2500rpm on WOT is an improvement. I didn't have a digital camera around while installing, but I will snap some pictures tomorrow. On a side note, the instructions say that this unit was supposed to come with a CARB sticker but no sticker existed. I'm going to have to call the K&N rep and find out about that.