I have a similar noise when it is cold out. mines an 06 2.5 with about 14K miles on it. sounds like a whining or whooshing noise at 3/4 throttle for the first few minutes when its first started when its cold. usually by the first mile its gone, I think its just the intake changeover that runs the air over the exaust before it goes into the engine to warm it up faster. I don't know the actual name of it.
2006 SE 6 Speed, Solar Yellow. Zone 2" Hydro BB, Sway Links, and Steering Stabilizer. 31x10.5-15 Bridgestone Dueler AT Revo. Alpine CDA9813, Polk MM6, Polk C400.4