problems with my ka24e

[pj]

when i start my car, half the time the idle fluctuates a little but will idle pretty good, when i feather the gas pedal or touch it in any way, the car will bog then return to normal.other times it will start, idle and respond like it normaly should, perfect.after 2-2500 rpm it runs very good, acelerates faster than a DE as well as a DSM 420A.the MAF is working, and i thought it was the tps that was responsible, i changed it (but had to re-splice on the old plug onto the new sensor, new one was broken) i turned it on and it idled at 2000 instead of the usual 1100rpm then after a few moments went back to normal but still had the bogging problem.what the hell am i missing? new plugs/wires, cleaned the cap and rotor to test and see if it made a diff. it didnt.any thoughts guys? the car runs good just thins damn off and on problem.

[myS13wantsaVQ35]

fuel filter?

[pj]

that was my first diagnosis, it has a brand new fuelfilter.i think im going to scope out the tank tomm. check the fuel pump. heck maybe theres some water in my tank? and its being picked up here and there. i dunno ive been pouring over this thing thinking 'wth" all afternoon lol