Very much aware of the difference. On DIS type engines it's crucial to have your cam and crank timing properly set. If your crank and cams are out of sync Ignition timing doesn't mean squat. So, back the basics of ensuring cams and crank are spot on before proceeding with diagnostics since the issue occurred after removing the head.Ignition timing ang cam timing are two very different things. Not sure how similar this is comparing an infer 1fz to a newer 105 style setup