diff --git a/HLTrigger/Configuration/python/customizeHLTforCMSSW.py b/HLTrigger/Configuration/python/customizeHLTforCMSSW.py
index 023b5c236ba7b..5ca80eac75e9e 100644
--- a/HLTrigger/Configuration/python/customizeHLTforCMSSW.py
+++ b/HLTrigger/Configuration/python/customizeHLTforCMSSW.py
@@ -239,8 +239,6 @@ def customiseForPR24339HybridFormatSiStripZS(process):
 # Adding some parameters to the pixel clusterizer
 def customiseFor24329(process):
     for producer in producers_by_type(process, "SiPixelClusterProducer"):
-        producer.AdcFullScaleStack = cms.int32(255)
-        producer.FirstStackLayer = cms.int32(5)
         producer.ElectronPerADCGain = cms.double(135.)
         producer.Phase2Calibration = cms.bool(False)
         producer.Phase2ReadoutMode = cms.int32(-1)
diff --git a/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.cc b/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.cc
index d7e384fbabc5f..99a7c792cc527 100644
--- a/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.cc
+++ b/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.cc
@@ -51,8 +51,6 @@ PixelThresholdClusterizer::PixelThresholdClusterizer
     theConversionFactor_L1( conf.getParameter<int>("VCaltoElectronGain_L1") ),
     theOffset( conf.getParameter<int>("VCaltoElectronOffset") ),
     theOffset_L1( conf.getParameter<int>("VCaltoElectronOffset_L1") ),
-    theStackADC( conf.getParameter<int>("AdcFullScaleStack") ),
-    theFirstStack( conf.getParameter<int>("FirstStackLayer") ),
     theElectronPerADCGain( conf.getParameter<double>("ElectronPerADCGain") ),
     doPhase2Calibration( conf.getParameter<bool>("Phase2Calibration") ),
     thePhase2ReadoutMode( conf.getParameter<int>("Phase2ReadoutMode") ),
@@ -87,8 +85,6 @@ PixelThresholdClusterizer::fillDescriptions(edm::ConfigurationDescriptions& desc
   desc.add<int>("ClusterThreshold_L1", 4000);
   desc.add<int>("ClusterThreshold", 4000);
   desc.add<int>("maxNumberOfClusters", -1);
-  desc.add<int>("AdcFullScaleStack", 255);
-  desc.add<int>("FirstStackLayer", 5);
   desc.add<double>("ElectronPerADCGain", 135.);
   desc.add<bool>("Phase2Calibration", false);
   desc.add<int>("Phase2ReadoutMode", -1);
@@ -261,19 +257,10 @@ void PixelThresholdClusterizer::copy_to_buffer( DigiIterator begin, DigiIterator
     } else {
       int i=0;
       const float gain = theElectronPerADCGain; // default: 1 ADC = 135 electrons
-      const int maxADC8bitVal_ = 255;
       for(DigiIterator di = begin; di != end; ++di) {
         auto adc = di->adc();
         const float pedestal = 0.; //
         electron[i] = int(adc * gain + pedestal);
-        if (theLayer>=theFirstStack) {
-          if (theStackADC==1&&adc==1) {
-            electron[i] = int(maxADC8bitVal_*gain); // Arbitrarily use overflow value.
-          }
-          if (theStackADC>1&&theStackADC!=maxADC8bitVal_&&adc>=1){
-            electron[i] = int((adc-1) * gain * maxADC8bitVal_/float(theStackADC-1));
-          }
-        }
         ++i;
       }
       assert(i==(end-begin));
@@ -414,18 +401,7 @@ int PixelThresholdClusterizer::calibrate(int adc, int col, int row)
       // Simple (default) linear gain 
       const float gain = theElectronPerADCGain; // default: 1 ADC = 135 electrons
       const float pedestal = 0.; //
-      const int maxADC8bitVal_ = 255; 
       electrons = int(adc * gain + pedestal);
-      if (theLayer>=theFirstStack) {
-	    if (theStackADC==1&&adc==1)
-	    {
-	      electrons = int(maxADC8bitVal_*gain); // Arbitrarily use overflow value.
-	    }
-	    if (theStackADC>1&&theStackADC!=maxADC8bitVal_&&adc>=1)
-	    {
-	      electrons = int((adc-1) * gain * maxADC8bitVal_/float(theStackADC-1));
-	    }
-      }
     }
   
   return electrons;
diff --git a/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.h b/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.h
index 92cce8892a3f0..f699ae9bc301e 100644
--- a/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.h
+++ b/RecoLocalTracker/SiPixelClusterizer/plugins/PixelThresholdClusterizer.h
@@ -104,8 +104,6 @@ class dso_hidden PixelThresholdClusterizer final : public PixelClusterizerBase {
   const int theOffset;              // adc to electron conversion offset
   const int theOffset_L1;           // adc to electron conversion offset for Layer 1
 
-  const int   theStackADC;          // The maximum ADC count for the stack layers
-  const int   theFirstStack;        // The index of the first stack layer
   const double theElectronPerADCGain;  //  ADC to electrons conversion
 
   const bool doPhase2Calibration;    // The ADC --> electrons calibration is for phase-2 tracker
diff --git a/RecoLocalTracker/SiPixelClusterizer/python/SiPixelClusterizer_cfi.py b/RecoLocalTracker/SiPixelClusterizer/python/SiPixelClusterizer_cfi.py
index cfa9ad7e34fcd..bf0bda3b4c013 100644
--- a/RecoLocalTracker/SiPixelClusterizer/python/SiPixelClusterizer_cfi.py
+++ b/RecoLocalTracker/SiPixelClusterizer/python/SiPixelClusterizer_cfi.py
@@ -26,8 +26,6 @@
     # **************************************
     maxNumberOfClusters = cms.int32(-1), # -1 means no limit.
     ElectronPerADCGain = cms.double(135.0),
-    AdcFullScaleStack = cms.int32(255),
-    FirstStackLayer = cms.int32(5),
     Phase2Calibration = cms.bool(False),
     Phase2ReadoutMode = cms.int32(-1),
     Phase2DigiBaseline = cms.double(1200.),
diff --git a/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py b/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py
index d82b49bf9f394..f097248d5f157 100644
--- a/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py
+++ b/SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py
@@ -77,8 +77,6 @@ def _modifyPixelDigitizerForPhase1Pixel( digitizer ) :
     ElectronPerAdc = cms.double(135.0),
     TofUpperCut = cms.double(12.5),
     AdcFullScale = cms.int32(255),
-    AdcFullScaleStack = cms.int32(255),
-    FirstStackLayer = cms.int32(5),
     TofLowerCut = cms.double(-12.5),
     TanLorentzAnglePerTesla_FPix = cms.double(0.106),
     TanLorentzAnglePerTesla_BPix = cms.double(0.106),
diff --git a/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.cc b/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.cc
index 28843550d1748..f1c19ea7c1b11 100644
--- a/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.cc
+++ b/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.cc
@@ -189,7 +189,6 @@ SiPixelDigitizerAlgorithm::SiPixelDigitizerAlgorithm(const edm::ParameterSet& co
   // ADC saturation value, 255(8bit adc.
   //theAdcFullScale(conf.getUntrackedParameter<int>("AdcFullScale",255)),
   theAdcFullScale(conf.getParameter<int>("AdcFullScale")),
-  theAdcFullScaleStack(conf.exists("AdcFullScaleStack")?conf.getParameter<int>("AdcFullScaleStack"):255),
 
   // Noise in electrons:
   // Pixel cell noise, relevant for generating noisy pixels
@@ -1414,15 +1413,6 @@ void SiPixelDigitizerAlgorithm::make_digis(float thePixelThresholdInE,
 	adc = int( signalInElectrons / theElectronPerADC ); // calibrate gain
       }
       adc = std::min(adc, theAdcFullScale); // Check maximum value
-// Calculate layerIndex
-     if (theAdcFullScale!=theAdcFullScaleStack){
-       if(pixdet->subDetector() == GeomDetEnumerators::SubDetector::P2OTB) { // Phase 2 OT Barrel only
-	 // Set to 1 if over the threshold
-	 if (theAdcFullScaleStack==1) {adc=1;}
-	 // Make it a linear fit to the full scale of the normal adc count.   Start new adc from 1 not zero.
-	 if (theAdcFullScaleStack!=1&&theAdcFullScaleStack!=theAdcFullScale) {adc = int (1 + adc * (theAdcFullScaleStack-1)/float(theAdcFullScale) );}
-       }
-     } // Only enter this if the Adc changes for the outer layers
 #ifdef TP_DEBUG
       LogDebug ("Pixel Digitizer")
 	<< (*i).first << " " << (*i).second << " " << signalInElectrons
diff --git a/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.h b/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.h
index 9103e4e72f9aa..9afd731c839f9 100644
--- a/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.h
+++ b/SimTracker/SiPixelDigitizer/plugins/SiPixelDigitizerAlgorithm.h
@@ -341,7 +341,6 @@ class SiPixelDigitizerAlgorithm  {
     //-- make_digis 
     const float theElectronPerADC;     // Gain, number of electrons per adc count.
     const int theAdcFullScale;         // Saturation count, 255=8bit.
-    const int theAdcFullScaleStack;    // Saturation count for stack layers, 1=1bit.
     const float theNoiseInElectrons;   // Noise (RMS) in units of electrons.
     const float theReadoutNoise;       // Noise of the readount chain in elec,
                                  //inludes DCOL-Amp,TBM-Amp, Alt, AOH,OptRec.