So I just bought a 2011 es 2.0 (wicked white) and NEED some more acceleration without voiding that warranty. Got about 600 bucks to blow. What's my best option? Never mod out a car before as bikes have been my thing for awhile. So not sure about pros/cons of cold air vs. short ram. What's gonna add the most bag for the buck, intake/exhaust? What brands are good, what's junk? Or is it all just preference? Current mods: 25% tint all around.