ive just done a cam swap in my 94z and got it tuned..but now it idles lower than what he tuned it for..he set it for 800 and its on 600 to 650 after it warms up,and sometimes it acts like it is gonna cut off bc it gets so low..i have slotted the tps and adjusted on the throttle blades nothing really helps..i can get the iac counts up but it doesnt help the idle, i can adjust it to get the idle up but the iac counts go down alot and sometimes on 0...i need help with this..any help will be greatly appreciated

 

Actually it probably idles exactly where it's set at give or take 100 rpm flux. The stock tachs are notorious for being wrong. The tuner needs to turn the idle up a little bit.