Damage Types / Counters
http://www.eve-outtakes.de/damagetypes.htm
http://wiki.eveuniversity.org/NPC_Damage_Types

Name Range - Tracking - Damage
EMP -50% 0% EM (75%)/exp (16%)/kin
Fusion -50% 0% EXP (83%)/kin
Phased -50% 0% THERM (83%)/kin
Titanium 0% 20% KIN (75%)/exp

Rats Ammo to Use
Angel Cartel Fusion
Blood Raiders EMP
Guristas Phased Plasma
Serpentis Phased Plasma
Sansha EMP
Mercenaries Phased Plasma
Mordu's Legion Phased Plasma
Rogue Drones EMP
Amarr Empire EMP
Caldari State Phased Plasma
Gallente Federation Phased Plasma
Minmatar Republic Fusion

Use T2 Barrage - For explosive and kinetic

Targeting systems
Minmatar - Ladar
Caldari - Gravimetric
Gallente - Magnetometric
Amarr - Radar

Stack Effects
1st mod: c(1) = 100.000%
2nd mod: c(2) = 86.9119842%
3d mod: c(3) = 57.1037996%
4th mod: c(4) = 28.2469117%