diff --git a/L1Trigger/L1THGCal/python/customNewProcessors.py b/L1Trigger/L1THGCal/python/customNewProcessors.py
new file mode 100644
index 0000000000000..20d893c269154
--- /dev/null
+++ b/L1Trigger/L1THGCal/python/customNewProcessors.py
@@ -0,0 +1,10 @@
+import FWCore.ParameterSet.Config as cms
+
+def custom_clustering_standalone(process):
+    process.hgcalBackEndLayer2Producer.ProcessorParameters.ProcessorName = cms.string('HGCalBackendLayer2Processor3DClusteringSA')
+    return process
+
+def custom_tower_standalone(process):
+    process.hgcalTowerProducer.ProcessorParameters.ProcessorName = cms.string('HGCalTowerProcessorSA')
+    return process
+
diff --git a/L1Trigger/L1THGCalUtilities/python/customNtuples.py b/L1Trigger/L1THGCalUtilities/python/customNtuples.py
index 92c3399a4d661..e4e82e645750b 100644
--- a/L1Trigger/L1THGCalUtilities/python/customNtuples.py
+++ b/L1Trigger/L1THGCalUtilities/python/customNtuples.py
@@ -8,6 +8,22 @@ def custom_ntuples_V9(process):
             ntuple.bhSimHits = cms.InputTag('g4SimHits:HGCHitsHEback')
     return process
 
+def custom_ntuples_standalone_clustering(process):
+    ntuples = process.hgcalTriggerNtuplizer.Ntuples
+    for ntuple in ntuples:
+        if ntuple.NtupleName=='HGCalTriggerNtupleHGCTriggerCells' or \
+           ntuple.NtupleName=='HGCalTriggerNtupleHGCClusters' or \
+           ntuple.NtupleName=='HGCalTriggerNtupleHGCMulticlusters':
+            ntuple.Multiclusters = cms.InputTag('hgcalBackEndLayer2Producer:HGCalBackendLayer2Processor3DClusteringSA')
+    return process
+
+
+def custom_ntuples_standalone_tower(process):
+    ntuples = process.hgcalTriggerNtuplizer.Ntuples
+    for ntuple in ntuples:
+        if ntuple.NtupleName=='HGCalTriggerNtupleHGCTowers':
+            ntuple.Towers = cms.InputTag('hgcalTowerProducer:HGCalTowerProcessorSA')
+    return process
 
 
 def create_ntuple(process, inputs,
diff --git a/L1Trigger/L1THGCalUtilities/test/testHGCalL1T_newProcessors_V11_cfg.py b/L1Trigger/L1THGCalUtilities/test/testHGCalL1T_newProcessors_V11_cfg.py
new file mode 100644
index 0000000000000..da5e5e2a85c17
--- /dev/null
+++ b/L1Trigger/L1THGCalUtilities/test/testHGCalL1T_newProcessors_V11_cfg.py
@@ -0,0 +1,94 @@
+import FWCore.ParameterSet.Config as cms 
+
+from Configuration.Eras.Era_Phase2C9_cff import Phase2C9
+process = cms.Process('DIGI',Phase2C9)
+
+# import of standard configurations
+process.load('Configuration.StandardSequences.Services_cff')
+process.load('SimGeneral.HepPDTESSource.pythiapdt_cfi')
+process.load('FWCore.MessageService.MessageLogger_cfi')
+process.load('Configuration.EventContent.EventContent_cff')
+process.load('SimGeneral.MixingModule.mixNoPU_cfi')
+process.load('Configuration.Geometry.GeometryExtended2026D49Reco_cff')
+process.load('Configuration.Geometry.GeometryExtended2026D49_cff')
+process.load('Configuration.StandardSequences.MagneticField_cff')
+process.load('Configuration.StandardSequences.Generator_cff')
+process.load('IOMC.EventVertexGenerators.VtxSmearedHLLHC14TeV_cfi')
+process.load('GeneratorInterface.Core.genFilterSummary_cff')
+process.load('Configuration.StandardSequences.SimIdeal_cff')
+process.load('Configuration.StandardSequences.Digi_cff')
+process.load('Configuration.StandardSequences.SimL1Emulator_cff')
+process.load('Configuration.StandardSequences.DigiToRaw_cff')
+process.load('Configuration.StandardSequences.EndOfProcess_cff')
+process.load('Configuration.StandardSequences.FrontierConditions_GlobalTag_cff')
+
+
+process.maxEvents = cms.untracked.PSet(
+    input = cms.untracked.int32(50)
+)
+
+# Input source
+process.source = cms.Source("PoolSource",
+       fileNames = cms.untracked.vstring('/store/mc/Phase2HLTTDRWinter20DIGI/SingleElectron_PT2to200/GEN-SIM-DIGI-RAW/PU200_110X_mcRun4_realistic_v3_ext2-v2/40000/00582F93-5A2A-5847-8162-D81EE503500F.root'),
+       inputCommands=cms.untracked.vstring(
+           'keep *',
+           'drop l1tEMTFHit2016Extras_simEmtfDigis_CSC_HLT',
+           'drop l1tEMTFHit2016Extras_simEmtfDigis_RPC_HLT',
+           'drop l1tEMTFHit2016s_simEmtfDigis__HLT',
+           'drop l1tEMTFTrack2016Extras_simEmtfDigis__HLT',
+           'drop l1tEMTFTrack2016s_simEmtfDigis__HLT',
+           'drop FTLClusteredmNewDetSetVector_mtdClusters_FTLBarrel_RECO',
+           'drop FTLClusteredmNewDetSetVector_mtdClusters_FTLEndcap_RECO',
+           'drop MTDTrackingRecHitedmNewDetSetVector_mtdTrackingRecHits__RECO',
+           'drop BTLDetIdBTLSampleFTLDataFrameTsSorted_mix_FTLBarrel_HLT',
+           'drop ETLDetIdETLSampleFTLDataFrameTsSorted_mix_FTLEndcap_HLT',
+           )
+       )
+
+process.options = cms.untracked.PSet(
+
+)
+
+# Production Info
+process.configurationMetadata = cms.untracked.PSet(
+    version = cms.untracked.string('$Revision: 1.20 $'),
+    annotation = cms.untracked.string('SingleElectronPt10_cfi nevts:10'),
+    name = cms.untracked.string('Applications')
+)
+
+# Output definition
+process.TFileService = cms.Service(
+    "TFileService",
+    fileName = cms.string("ntuple.root")
+    )
+
+# Other statements
+from Configuration.AlCa.GlobalTag import GlobalTag
+process.GlobalTag = GlobalTag(process.GlobalTag, 'auto:phase2_realistic_T15', '')
+
+# load HGCAL TPG simulation
+process.load('L1Trigger.L1THGCal.hgcalTriggerPrimitives_cff')
+
+# Use new processors and standalone algorithms
+from L1Trigger.L1THGCal.customNewProcessors import custom_clustering_standalone, custom_tower_standalone
+process = custom_clustering_standalone(process)
+process = custom_tower_standalone(process)
+
+process.hgcl1tpg_step = cms.Path(process.hgcalTriggerPrimitives)
+
+
+# load ntuplizer
+process.load('L1Trigger.L1THGCalUtilities.hgcalTriggerNtuples_cff')
+from L1Trigger.L1THGCalUtilities.customNtuples import custom_ntuples_standalone_clustering, custom_ntuples_standalone_tower
+process = custom_ntuples_standalone_clustering(process)
+process = custom_ntuples_standalone_tower(process)
+process.ntuple_step = cms.Path(process.hgcalTriggerNtuples)
+
+# Schedule definition
+process.schedule = cms.Schedule(process.hgcl1tpg_step, process.ntuple_step)
+
+# Add early deletion of temporary data products to reduce peak memory need
+from Configuration.StandardSequences.earlyDeleteSettings_cff import customiseEarlyDelete
+process = customiseEarlyDelete(process)
+# End adding early deletion
+