Title says it all

Controls:

Use-Deploy parachute

Speed up-Slingshot

Velocity and handling are still very close to the parachute, although you have a bit more control because there's no other entities strapped to your back.

Original idea by flyboy95 of the facepunch forums and ICdevil.

Video:

Put the x_jj_wingsuit.arc/tab in your justcause2/archives_win32 folder. 

Forum post: http://videogamemods.com/justcause2/index.php/forum?func=view&catid=22&id=5406 

UPDATED: Grapple hook is fixed 

UPDATED: With thrusters(Thanks to powerslave212 for the dlc help):

http://videogamemods.com/justcause2/index.php/mods/other/Parachute/Superman-Flying-Mod-Version-3.2/

NOTE: I just want to make it clear that I am only endorsing powerslave's version of the mod, not claiming it for a prize.