2K to 3K craziness
Hey guys..its been awhile!,
So got a problem...didn't start till today. At take off around 2K to 3K I have a slight bogging down, stuttering, and occasionally backfire if I floor it. No CEL, cleaned the MAF, car runs smooth through gears and higher rpms. But flooring it from a stop causes it to act up(its never done this before till now). So my question is 1.) is it bad gas? (filled it up the day before) 2.) vacuum leak somewhere? 3.) something fuel pump wise? and finally 4.) clogged cat? I'm running stock mid-pipe with SLPs. The car runs, but it does have me nervous. Input?