Sorry to hear things are not working to well right now.. One thing that comes to mind since you said everything is attached. Make sure there are no air leaks and the thing that comes to mind is a problem with the MAS sensor being hooked up right. which I hope you hooked up the sensor to the new intake? You can most likely use this link for reference and see if you missed anything:

http://www.240sx.org/links/installs/aem-intake/index.htm

Good luck!