FYI- i have the vents on my 01 and it helped, but you should go to the dealer and get the "injector shield kit". Its just some bulls*** little tube shaped material that wraps around the 3 and 4 injectors. It does help though, and its like 8 bucks. I got that, and wrapped them with some foil tape and the issue went away.
Its the 3, and 4 that boil fuel and cause the mis fire.