I have a 14 lb turkey that I plan to roast for 30 at 400 and then about 2 hours for 350. If I use the convection fan, how much sooner will it be done?

There's no rule of thumb, as all ovens -- and turkeys -- are different. If I were you, I'd start checking the internal temperature of the bird before it's spent 2 full hours in the oven. If you're brining, it will cook even faster!

Hi YS -- generally convection will cut down your cooking time by 25%. There's a post about this here: http://www.epicurious.com/archive/blogs/editor/2009/11/thanksgiving-answers-roasting-a-turkey-in-a-convection-oven.html