Hello all. I have been doing a lot of reading and research on this great forum and would like to ask for some help i did a 24x conversion on my caprice and been trying to figure something out. If i start my car cold and let it warm up it seems to idle ok, once to operating temp the iac shows 80-90 and the car will stumble when i put her into drive and struggle to hold an idle, if i shut the car off for a few seconds then restart the iac goes down to 40-60 and will not stumble into gear anymore. This is driving me nuts. Also does the dynamic airflow and desired airflow have to be the same? I read a few posts about this and there seems to be conflicts about this right now my raf at op temp is about 7.40 gps and if i adjust the iac effective area to make the desired and dynamic even it makes the raf go up to 9.50 or so. I have the ve and maf tuned at idle and cruise at +- 2% ltft. I also read that the effective area should not be touched unless using different iac motors. Im using a 2002 fbody auto calibration and i believe my iac on my 58mm tb has way different iac circuits than a stock tb on a fbody. Thanks in advance. Jim