when i start my car the idle isnt really stedy. its suppose to be at 500 rpm's but its kinda jumps a lil bit and it has a small backfire to it, u can hear it. its not LOUD but still noticible. i was wondering if u guys can give me some feed back and let me know whats goin on and any tips to get rid of this problem.

(JdM SOHc Zc motor, iceman cold air, catback ext.)

 

does it surge up and down? if it does, its probly your iacv.
try sprayin some carb cleaner in the throttle body. the backfire might be something with your timming

 

it surges up but only about 200 rpms then comes back down to 500 rpms.