First off, i've looked at a couple of the nitrous threads and been to the store's websites but there seems to be a lot of different parts needed for the kit. Can anyone tell me what exactly to get and around how much they are?

Second, i just ordered an Injen CAI, but i've seen all these posts about voiding warranties. Will this void the warranty? More importantly, i've seen most guys on here say that the CAI can't really go through too deep of water but can any damage occur from driving it very heavy rain or even sitting in rain? Sorry for all the questions, but i figured i'd waste one thread instead of a couple haha. Thanks