tune up/ mass air flow question

[stepside83]

well i finally had time to mess with my truck, i took the o2 sensors out on left side and it idled alot better, but when i took it for a ride it still ran the same, like it wanted to go as fast as my foot was trying to make it, but there was something holding it back, the check engine light comes on still and flashes and then goes out, but it only did it after the o2 sensore were in again while they were out it didn tflash at all, so back to the drawing board i guess, i read my owners manula and it said when light flashes it useally something to do with emissions, any truth to that? and any ideas on what it could be now? has new oem plugs, new wires, just changed oil tonight, the onl thing can think of is the coil packs are causeing the problem, thanks gus any info once again will be apprecated