I am having one hell of time with the idle in my turbo gsr. When I start it up and it's cold it will just die unless I give it gas, then after i drive it for about 15 mins and it's all warmed up it will idle fine, most of the time. It never did this before, but i just had my power fc installed and tuned and ever since it will just idle ****. Is this just a issue with tuning or might i check something else? like i said tho... it will idle just fine after the car has warmed up, but if has sat for awhile and cooled down then it just doesn't like hold a idle at all w/o giving it a little gas to keep it going. let me know what i should do. thanks