I noticed no one responded to your question. I have ordered the MMR Stage 2 intake and will install it Monday 12/13. I checked with my Cuz who is into racing bigtime with both of his sons and he indicated the K&N was good, but had more of a noise without any addition flow of air. I dont know for sure, but I am going with the MMR stage2. Looks good from the pictures. I could not get anyone to respond to my questions so I went outside the forum for advice. The price I got it from was good from moranoracing.com. The price was 299. with a 10.00 discount this month. Good luck.