how do you make your own mods like jumping high shooting fast and all that other stuff? How do you put modded maps on your xbox?
Use the search function, there are literally hundreds of threads on it already, just search ad forums for halo 2 mods. Lots.
this is probably the best tut for dot halo i have seen in the 3 years i have been modding(well maybe not the best but the most tuts in one place) if you dont want to search
you can use, dothalo, H2edit for mods like jump really high and run really fast and you can use insolence for new vehicles such as phantom