diff --git a/lib/determine-basal/determine-basal.js b/lib/determine-basal/determine-basal.js
index a5923eaf9..002a07ea3 100644
--- a/lib/determine-basal/determine-basal.js
+++ b/lib/determine-basal/determine-basal.js
@@ -414,12 +414,10 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
     // generate predicted future BGs based on IOB, COB, and current absorption rate
 
     var COBpredBGs = [];
-    var aCOBpredBGs = [];
     var IOBpredBGs = [];
     var UAMpredBGs = [];
     var ZTpredBGs = [];
     COBpredBGs.push(bg);
-    aCOBpredBGs.push(bg);
     IOBpredBGs.push(bg);
     ZTpredBGs.push(bg);
     UAMpredBGs.push(bg);
@@ -527,10 +525,9 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
     } else {
         cid = Math.min(remainingCATime*60/5/2,Math.max(0, meal_data.mealCOB * csf / ci ));
     }
-    var acid = Math.max(0, meal_data.mealCOB * csf / aci );
     // duration (hours) = duration (5m) * 5 / 60 * 2 (to account for linear decay)
     console.error("Carb Impact:",ci,"mg/dL per 5m; CI Duration:",round(cid*5/60*2,1),"hours; remaining CI (~2h peak):",round(remainingCIpeak,1),"mg/dL per 5m");
-    //console.error("Accel. Carb Impact:",aci,"mg/dL per 5m; ACI Duration:",round(acid*5/60*2,1),"hours");
+    //console.error("Accel. Carb Impact:",aci,"mg/dL per 5m; ACI Duration:",round(aci*5/60*2,1),"hours");
     var minIOBPredBG = 999;
     var minCOBPredBG = 999;
     var minUAMPredBG = 999;
@@ -569,7 +566,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
             // for COBpredBGs, predicted carb impact drops linearly from current carb impact down to zero
             // eventually accounting for all carbs (if they can be absorbed over DIA)
             var predCI = Math.max(0, Math.max(0,ci) * ( 1 - COBpredBGs.length/Math.max(cid*2,1) ) );
-            var predACI = Math.max(0, Math.max(0,aci) * ( 1 - COBpredBGs.length/Math.max(acid*2,1) ) );
             // if any carbs aren't absorbed after remainingCATime hours, assume they'll absorb in a /\ shaped
             // bilinear curve peaking at remainingCIpeak at remainingCATime/2 hours (remainingCATime/2*12 * 5m)
             // and ending at remainingCATime h (remainingCATime*12 * 5m intervals)
@@ -580,7 +576,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
             predCIs.push(round(predCI,0));
             //process.stderr.write(round(predCI,1)+"+"+round(remainingCI,1)+" ");
             COBpredBG = COBpredBGs[COBpredBGs.length-1] + predBGI + Math.min(0,predDev) + predCI + remainingCI;
-            var aCOBpredBG = aCOBpredBGs[aCOBpredBGs.length-1] + predBGI + Math.min(0,predDev) + predACI;
             // for UAMpredBGs, predicted carb impact drops at slopeFromDeviations
             // calculate predicted CI from UAM based on slopeFromDeviations
             var predUCIslope = Math.max(0, uci + ( UAMpredBGs.length*slopeFromDeviations ) );
@@ -599,7 +594,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
             // truncate all BG predictions at 4 hours
             if ( IOBpredBGs.length < 48) { IOBpredBGs.push(IOBpredBG); }
             if ( COBpredBGs.length < 48) { COBpredBGs.push(COBpredBG); }
-            if ( aCOBpredBGs.length < 48) { aCOBpredBGs.push(aCOBpredBG); }
             if ( UAMpredBGs.length < 48) { UAMpredBGs.push(UAMpredBG); }
             if ( ZTpredBGs.length < 48) { ZTpredBGs.push(ZTpredBG); }
             // calculate minGuardBGs without a wait from COB, UAM, IOB predBGs
@@ -654,15 +648,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
     }
     rT.predBGs.ZT = ZTpredBGs;
     lastZTpredBG=round(ZTpredBGs[ZTpredBGs.length-1]);
-    if (meal_data.mealCOB > 0) {
-        aCOBpredBGs.forEach(function(p, i, theArray) {
-            theArray[i] = round(Math.min(401,Math.max(39,p)));
-        });
-        for (i=aCOBpredBGs.length-1; i > 12; i--) {
-            if (aCOBpredBGs[i-1] !== aCOBpredBGs[i]) { break; }
-            else { aCOBpredBGs.pop(); }
-        }
-    }
     if (meal_data.mealCOB > 0 && ( ci > 0 || remainingCIpeak > 0 )) {
         COBpredBGs.forEach(function(p, i, theArray) {
             theArray[i] = round(Math.min(401,Math.max(39,p)));