I just picked one up and as soon as I receive I'll post to let know if I feel any difference,which I seriously doubt.K&N claims 10.7 hp increase but I already have a CAI I bought in the beginning and from that to K&N Won't make any difference but i will get rid of the problem I'm experiencing now.My present cai keeps slipping off the throttle body,checked everything mounts,clamps and the silicone all is fine I think the silicione tubes inards are dried out so as not gripping well on the chrome tube,cheap ebay cai.Maybe if I replace the couplings with a higher quality,but decided to go with the K&N.