ok guys, i figured out something and i thought i would share with you all that are having idling problems. everytime i would come to a stop, downshifting, my RPMs would drop really low and then shoot back up really high. it looked like a freakin seesaw. sometimes it would die. well, i replaced IAC, cleaned MAF, no fix. I decided to uninstall the predator tune(that came with tuner) out of my car. to my suprise, no more idling problems. i think something is wrong with that tune that comes with the predator. so, i just stuck with the stock tune and adjusted all the paramaters for what i needed (traction control disable and del rear 02s). anyways, thought i would let you guys know about that.