it would void the warranty on the intake not the whole car. plus by law the dealer has to prove that the intake caused the problem to not cover it. im for one lucky my dealer is a good friend and takes care of me. did warranty work on my previous car witha blower haha
it wasnt bad at all. took me about 10 min to get the stock one out. unplug the maf and the vacuum hose, unbolt 2 bolts, loosen the elbow at the tb, and pull out. yes it will work with the L99 thats what i have. i feel extra power but thats cause i have headers and a catback too