Ac idle problem

[NJcobra94]

My car is a 94 cobra with b303 cam, gt40x head,bbk long tubes, supporting bolt ons... I had a nasty idle surge but cleaned.my iac and correct set my timing which solved that... however now with the ac on it drives fine but when I come to a stop it drops down low and eventually stalls... its currently untuned but maf is calibrated.. tps is set at .98... anything else im over looking

 

[CC'S95GT]

Iac is supposed to raise the idle when the a/c is.

 

[BYEBYE2U]

When I did my H/c/I install I have the same problem since.I still haven't figured it out.what is your timing set on?