Hey guys, I was wondering if you can help me out with this problem that is driving me nuts. Lately, especially the last month, the my car will start to jerk back and forth, very annoyingly like if is something is clogging the fueling system or i don't know what. The first two gears are the most noticeable and most annoying because when i need to cruise getting inside my parking lot, I feel i have to tap the throttle very gently if not it will jerk back and forth until i put in neutral and late ride out. Plus at times at letting it out the rpm's ride so low that it almost shuts off by itself. Is it the fuel injectors? Vacuum Leak? Spark Plugs? I have no mods in the car, only the nameless axleback, that is it,no tune, no cobb, no intake, not yet, because I want to take of this problem first. Any suggestions would be appreciate it. Thanks!