i know that these are a big thing on HT but i haven't seen a post on here yet so, i decided i would.
first off
http://www.bpinitiatives.com/products.html
the filter that was on my Injen intake was in sad shape so i started to look for a good filter to replace it. i came across the BPi stack/K&N combo and it looked promising. i bought everything i needed to put it on my Injen intake only to be disappointed sence it didn't fit
shortly after i bought a cheap Ebay intake and it still didn't fit. i ended up cutting about an inch off of the pipe to get it to fit right but it fit.
shortly after the install i took it for a spin and it felt like there was a definent power increase from 4k up to 7k. as far as sound goes the only time i can here it is 1.5k to 2.2k after that my exhaust gets loud and i can't hear it. it is loud at those RPM's though and has a nice sound to it.
Linear Mode
