hey man your not the only one that has the problem, my car does the same exact thing, i changed sparkplugs, wires, coil. cats, precats. and i still have the problem, i have no idea as to what it can be but its a major pain in the ass, the car is almost undrive able in low rpms, because it bucks so much, and some times its relaly dangerous when it ry to pull out of places.
Experience is the worst teacher; it gives the test before presenting the lesson.
Why do you need the cats when u have dogs

04 WRX - TOTALED 3-5-05
Previoius Owned: 96 Contour LX with svt kit