Contradiction with Exodus 7:3-4
Psalms 78:43 speaks of miracles in Egypt, while Exodus 7:3-4 suggests God hardened Pharaoh's heart to prevent the Israelites' release.
Exodus 7:3-4: And I will harden Pharaoh's heart, and multiply my signs and my wonders in the land of Egypt.
Contradiction with Exodus 12:31-33
Psalms 78:43 describes signs shown in Egypt, contrasting Pharaoh's eventual urgency to release the Israelites in Exodus 12:31-33.
Exodus 12:31-33: And he called for Moses and Aaron by night, and said, Rise up, [and] get you forth from among my people, both ye and the children of Israel; and go, serve the LORD, as ye have said.
Contradiction with Ezekiel 20:9
Psalms 78:43 emphasizes public miracles, whereas Ezekiel 20:9 stresses God's actions were to uphold His name among the nations.
Ezekiel 20:9: But I wrought for my name's sake, that it should not be polluted before the heathen, among whom they [were], in whose sight I made myself known unto them, in bringing them forth out of the land of Egypt.