I have a 03 yellow wrx and I have an intermittent problem that the dealership has told me that it's a wrx problem and I should get used to it. Sometimes, especially after I have driven it for a while, distance or in traffic, it stalls and jumps when I push it at all. Not flooring it, even a gentle push. It feels like it's not getting gas or air and it drops in power when I accelerate, like a push...stop...push...stop, almost like your running out of gas. I just had it tuned (plugs n all), I have a blow off valve, cat back, and a short ram.