Aftermarket Camshaft

I am interested in replacing my stock cam with an aftermarket. The endless search for more power! I have a 97' 4.0L w/automatic trans. Comp Cams doesn't list anything for fuel injected engines, and Crane doesn't list anything for computer controled (is there a difference?). Has anybody tried to install an aftermarket cam, and did you have any fuel injection or computer problems? Are there other manufactures that make them for 4.0L that will perform and not have problems? Any recomendations to which camshaft to choose will be appreciated.
XJ

Check out: www.quadratec.com and www.4wd.com. Both sites have a plethora of parts available.

I'm not sure of the actual brands of cams available, and have not done a swap myself (yet...)