diff --git a/arbos/arbosState/initialize.go b/arbos/arbosState/initialize.go
index 374eff2cea..7ea2938c74 100644
--- a/arbos/arbosState/initialize.go
+++ b/arbos/arbosState/initialize.go
@@ -97,6 +97,16 @@ func InitializeArbosInDatabase(db ethdb.Database, cacheConfig *core.CacheConfig,
 		log.Crit("failed to open the ArbOS state", "error", err)
 	}
 
+	chainOwner, err := initData.GetChainOwner()
+	if err != nil {
+		return common.Hash{}, err
+	}
+	if chainOwner != (common.Address{}) {
+		err = arbosState.ChainOwners().Add(chainOwner)
+		if err != nil {
+			return common.Hash{}, err
+		}
+	}
 	addrTable := arbosState.AddressTable()
 	addrTableSize, err := addrTable.Size()
 	if err != nil {
diff --git a/cmd/conf/init.go b/cmd/conf/init.go
index f01d99f8b7..8e4e9a8892 100644
--- a/cmd/conf/init.go
+++ b/cmd/conf/init.go
@@ -20,6 +20,7 @@ type InitConfig struct {
 	DownloadPoll             time.Duration `koanf:"download-poll"`
 	DevInit                  bool          `koanf:"dev-init"`
 	DevInitAddress           string        `koanf:"dev-init-address"`
+	DevMaxCodeSize           uint64        `koanf:"dev-max-code-size"`
 	DevInitBlockNum          uint64        `koanf:"dev-init-blocknum"`
 	Empty                    bool          `koanf:"empty"`
 	ImportWasm               bool          `koanf:"import-wasm"`
@@ -47,6 +48,7 @@ var InitConfigDefault = InitConfig{
 	DownloadPoll:             time.Minute,
 	DevInit:                  false,
 	DevInitAddress:           "",
+	DevMaxCodeSize:           0,
 	DevInitBlockNum:          0,
 	Empty:                    false,
 	ImportWasm:               false,
@@ -75,6 +77,7 @@ func InitConfigAddOptions(prefix string, f *pflag.FlagSet) {
 	f.Bool(prefix+".dev-init", InitConfigDefault.DevInit, "init with dev data (1 account with balance) instead of file import")
 	f.String(prefix+".dev-init-address", InitConfigDefault.DevInitAddress, "Address of dev-account. Leave empty to use the dev-wallet.")
 	f.Uint64(prefix+".dev-init-blocknum", InitConfigDefault.DevInitBlockNum, "Number of preinit blocks. Must exist in ancient database.")
+	f.Uint64(prefix+".dev-max-code-size", InitConfigDefault.DevMaxCodeSize, "Max code size for dev accounts")
 	f.Bool(prefix+".empty", InitConfigDefault.Empty, "init with empty state")
 	f.Bool(prefix+".import-wasm", InitConfigDefault.ImportWasm, "if set, import the wasm directory when downloading a database (contains executable code - only use with highly trusted source)")
 	f.Bool(prefix+".then-quit", InitConfigDefault.ThenQuit, "quit after init is done")
diff --git a/cmd/nitro/init.go b/cmd/nitro/init.go
index f0b303817c..d4794f9fee 100644
--- a/cmd/nitro/init.go
+++ b/cmd/nitro/init.go
@@ -681,6 +681,7 @@ func openInitializeChainDb(ctx context.Context, stack *node.Node, config *NodeCo
 					Nonce:      0,
 				},
 			},
+			ChainOwner: common.HexToAddress(config.Init.DevInitAddress),
 		}
 		initDataReader = statetransfer.NewMemoryInitDataReader(&initData)
 	}
@@ -716,6 +717,9 @@ func openInitializeChainDb(ctx context.Context, stack *node.Node, config *NodeCo
 		if err != nil {
 			return chainDb, nil, err
 		}
+		if config.Init.DevInit && config.Init.DevMaxCodeSize != 0 {
+			chainConfig.ArbitrumChainParams.MaxCodeSize = config.Init.DevMaxCodeSize
+		}
 		testUpdateTxIndex(chainDb, chainConfig, &txIndexWg)
 		ancients, err := chainDb.Ancients()
 		if err != nil {
diff --git a/cmd/util/confighelpers/configuration.go b/cmd/util/confighelpers/configuration.go
index 19b5b1a24c..8c4ef2a70b 100644
--- a/cmd/util/confighelpers/configuration.go
+++ b/cmd/util/confighelpers/configuration.go
@@ -209,6 +209,7 @@ func devFlagArgs() []string {
 		"--init.empty=false",
 		"--http.port", "8547",
 		"--http.addr", "127.0.0.1",
+		"--http.api=net,web3,eth,arb,arbdebug,debug",
 	}
 	return args
 }
diff --git a/statetransfer/data.go b/statetransfer/data.go
index df4694aa17..21268a443a 100644
--- a/statetransfer/data.go
+++ b/statetransfer/data.go
@@ -14,6 +14,7 @@ type ArbosInitializationInfo struct {
 	AddressTableContents []common.Address
 	RetryableData        []InitializationDataForRetryable
 	Accounts             []AccountInitializationInfo
+	ChainOwner           common.Address
 }
 
 type InitializationDataForRetryable struct {
diff --git a/statetransfer/interface.go b/statetransfer/interface.go
index 7d592b4430..cb70fdd14d 100644
--- a/statetransfer/interface.go
+++ b/statetransfer/interface.go
@@ -17,6 +17,7 @@ type InitDataReader interface {
 	GetNextBlockNumber() (uint64, error)
 	GetRetryableDataReader() (RetryableDataReader, error)
 	GetAccountDataReader() (AccountDataReader, error)
+	GetChainOwner() (common.Address, error)
 }
 
 type ListReader interface {
diff --git a/statetransfer/jsondatareader.go b/statetransfer/jsondatareader.go
index c36061c0b0..5e992df3f0 100644
--- a/statetransfer/jsondatareader.go
+++ b/statetransfer/jsondatareader.go
@@ -210,3 +210,7 @@ func (r *JsonInitDataReader) GetAccountDataReader() (AccountDataReader, error) {
 		JsonListReader: listreader,
 	}, nil
 }
+
+func (r *JsonInitDataReader) GetChainOwner() (common.Address, error) {
+	return common.Address{}, nil
+}
diff --git a/statetransfer/memdatareader.go b/statetransfer/memdatareader.go
index 1d60888937..3d6b68343c 100644
--- a/statetransfer/memdatareader.go
+++ b/statetransfer/memdatareader.go
@@ -99,6 +99,10 @@ func (r *MemoryInitDataReader) GetAccountDataReader() (AccountDataReader, error)
 	}, nil
 }
 
+func (r *MemoryInitDataReader) GetChainOwner() (common.Address, error) {
+	return r.d.ChainOwner, nil
+}
+
 func (r *MemoryInitDataReader) Close() error {
 	return nil
 }