Okay, I have an 04, just bought it 2 weeks ago. It has 1800mi on it, and from the sounds of it have been pretty easy on it compared to some. At any rate, two days ago I was driving it and it seemed pretty sluggish, I wasn't feeling that pull around 2500rpms, thought maybe it was bad gas, well that night I got on it and watched the boost gauge and in 3rd gear at WOT it was only running 10lbs. Well yesterday morning I got on it again and this is what happened, 1st gear-5lbs, 2nd gear-5lbs, 3rd-10bls, 4th-13lbs, and the kicker in 5 gear at WOT it jumped to 18lbs and I heard an odd whistling sounds I've never heard before. BTW, it's stock no turbo upgrades. Then today I drove it again and in every gear is was fine except 1st where it ran just 5lbs again. I called the dealership and am bringing it in in the morning, but I thought maybe someone could give me some insight as to what it might be.