Hey everyone. i am relatively new to this forum, but have read a bunch of articles on here. i am the proud owner of a 2009 Vista Blue Ford Focus SE coupe 5spd. I have only had it about a week, but have a few questions. first, will adding an aftermarket exhaust(i want a magnaflow) void my factory warranty? i have read the owners manual, online warranty info and others, and still have not found a definitive answer as to whether or not it will void my warranty. i dont want a header and full exhaust. just a cat back. and possible a cold air intake later on. will this void my warranty?? any help would be great.......thanks for readin. proud to be a focus owner and cant wait to hear from you guys.