diff --git a/eos/effects/ecmburstjammer.py b/eos/effects/ecmburstjammer.py
index 2a3525ce4..7edb19382 100644
--- a/eos/effects/ecmburstjammer.py
+++ b/eos/effects/ecmburstjammer.py
@@ -1,5 +1,9 @@
 # Used by:
 # Modules from group: Burst Jammer (11 of 11)
-type = "active"
+type = "projected", "active"
 def handler(fit, module, context):
-    pass
\ No newline at end of file
+    if "projected" in context:
+        # jam formula: 1 - (1- (jammer str/ship str))^(# of jam mods with same str))
+        strModifier = 1 - module.getModifiedItemAttr("scan{0}StrengthBonus".format(fit.scanType))/fit.scanStrength
+
+        fit.ecmProjectedStr *= strModifier
\ No newline at end of file