please help, misfire wont go away

ok, so i bought a 97 camaro RS 5 speed almost 3 months ago. it ran pretty good for the first week or 2 before it started to misfire. it acts up for about a week or 2, then goes away for a week or 2, untill the last month probably where it just doesnt seem to go away. it doesnt happen when im going at a constant speed, but when i accelerate, with low revs or going up a hill it always happens. it will hold back, then have a little boost of power, then hold back again as i accelerate in second and 3rd mostly, but sometimes when i start in 1st if i dont have really high revs, it just sputters and looses all its power. and ive been driving standard for a year and a half so its not like im just bad at the clutch, plus i just got a new clutch about a month ago. then we put new spark plugs in, new fuel filter in, put some TKO in for the fuel injectors, and i cleaned the K&N so it cant be any of those, and i know my katalytic converters screwed so im dealing with that today. but if anyone has any tips id love to hear em.

ok, so i bought a 97 camaro RS 5 speed almost 3 months ago. it ran pretty good for the first week or 2 before it started to misfire. it acts up for about a week or 2, then goes away for a week or 2, untill the last month probably where it just doesnt seem to go away. it doesnt happen when im going at a constant speed, but when i accelerate, with low revs or going up a hill it always happens. it will hold back, then have a little boost of power, then hold back again as i accelerate in second and 3rd mostly, but sometimes when i start in 1st if i dont have really high revs, it just sputters and looses all its power. and ive been driving standard for a year and a half so its not like im just bad at the clutch, plus i just got a new clutch about a month ago. then we put new spark plugs in, new fuel filter in, put some TKO in for the fuel injectors, and i cleaned the K&N so it cant be any of those, and i know my katalytic converters screwed so im dealing with that today. but if anyone has any tips id love to hear em.
I just bought a 99' camero and for 1 week she was perfect i got the same problem and the service engine light keeps comeing on and off.After reading your troubleshooting i don't think i'm even going to bother and i was about to spend my sun.trying to figure it out. i think i'm just going to go to the dealership on mon.I'll keep you posted and you let me know if you find anything yourself.

well i just read a thread in another forum
http://www.camarov6.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=010951
it was 80 posts all about what these guys did to try to get rid of their misfire. go to the 4th page and read the last post. im gonna give that a try