I believe that Crash is correct about temps, but I love my Airaid CAI, I haven't experienced any problems related to the intake, and since I don't track the car, the temps aren't really a concern. I know the "wow" factor when I open the hood and people see the intake, is worth it. I think it really makes the underhood look much better, so I don't plan on going back to the stock box, but those who have all have legit reasons and I don't have an disagreement with them for doing so. I know that I put a pre-filter on my Airaid filter and I am amazed how much cleaner the filter has stayed, so it hasn't required cleaning or replacement like a stock filter does. And most folks here, know I'm not a big K&N fan, so that really wasn't an option I considered.