Up here in Canada, Toyota is very against any modding and your warranty is more or less gone. I plan on going with an Injen CAI. Other than hydro-locking, has anyone ever heard of a CAI causing motor damage. The Injen will be used along with a Hotshot header and TRD exhaust. Please put my mind at ease and tell me I should not have any problems. By the way, I do not drive my car hard.