DANG BATMAN, just idle pls

[phunny]

hey, can anyone pls tell me why when my car warms up it idles between 800-1500 rpms? it goes back and forth like i'm reving it??? pls input guys. mods are in my profile. i dont have a pocket logger yet but i do have the safc set to were it runs smooth

 

[turbolarry]

Idle surge maybe...?
http://www.vfaq.com/mods/wayback/BradBauer/engine/surge.html

 

[Newlogics]

hey, can anyone pls tell me why when my car warms up it idles between 800-1500 rpms? it goes back and forth like i'm reving it??? pls input guys. mods are in my profile. i dont have a pocket logger yet but i do have the safc set to were it runs smooth

VFAQ covers idle surge rather well, but if you still haven't cheked it out, here are some causes of surge (starting with most common)

Boost/vacuum leaks
Leaking/un-set BISS screw
Incorrect base timing
Missing/damaged connector on idle switch
Bad idle conrol motor
Bad fast-air valve.