I've had the K&N and it didn't perform any better than my custom made intake made with less than $50 in parts. If you have the money I'd go with the CAI system , it has a real heat shield unlike the crappy one that K&N sells which did next to nothing but provide a place to mount the TCM/ECM. That's all it was good for IMO. It also chaffed the **** out of the MAF adapter tube, which they then sent me a liner for the hole section.