WTF is my car doing!

ok well heres whats going on, i had some dumb ass guy install an intake (the one time i dont do my own work he insisted and my stupid self let him) anyways he messed up my vac lines, and my car was stalling out like a mother. i fixed the vac line problem and it seems like everything is working alright, but when my car is cold and i go to change gears like park to reverse i stall. i dont stall at idle anymore wihch is good. im just still wondering what the hell my car is doing my car idles kinda rough still. im gonna get new plugs, wires, and a cap and rotor, mabie that will help things. if anyone has any info about this that can help send it my way.

I hope he didnt fuck up your MAF...it could be getting bad readings?

Cold air intake, or just a filter?

its not cold air, its just a normal one, metal pipe thing and filter. im gonna get a data logger when i go to the track this weekend, it should tell me if my MAF is messed or giving bad readings, we will see whats going on hopefully.