I agree completely, mine sounds bad ass. You can hear the turbo spool up now and it sounds very agressive. The BPV sounds almost like a true BOV with the intake installed. I have not gotten my spring yet so i will have to see if it makes a difference. I know it seems like the BPV takes a long time to close when I lift between shifts so I think the stiffer spring should really help spoolup between shifts. I do not use the NLS because the car spins enough as it is right now and I dont want to stress my stock clutch out too much.

K&N filters flow really well but at the expense of filtering efficiency. They allow lots of fine dust to flow right through them and right into your engine. If you dont believe me take any K&N filter and shine a flashligh through it as you look through the inside of the filter. There are pretty big holes in that filter. They also attract lots of dirt because the are oiled which means that you will have to clean it more often than a dry filter. That is why I use AEM dryflow filters. If you do want an oiled cotton gauze filter use S&B they have twice as many layers of Gauze so they filter tons better and they still flow really well. I personally hate oiling filters. My Mustang, my Dakota, and my GMC sierra all had K&N or Airaid filters and I hated cleaning them waiting for them to dry and then try not to over oil them. I personally do not want to give my dealership the option of try to blame a oiled filter for some engine problem. Just my two cents.