Motor ringing at the acceleration 1800 around.

Hello dear Opel friends, maybe you have had some advice for me????? I changed from A Omi to B Omi a month ago ( 2.0 16V ), since then I’ve been screwing up a lot more :-(….. I have the following problem, the engine rings quite bright when accelerating from lower speeds. So, I first changed the candles…no success Today I changed the tap sensor and almost broke my fingers… 🙂 but the success also stayed out. Funny about it, when I disconnect the plug from the tap sensor, people after a few seconds the engine light and the engine probably switches into the emergency program…..and then nix rings more, even when accelerating from lower speeds… the engine runs really nice round!!!!! Can you please explain this to me????? Is the ignition somehow switched, or a lead from the tap sensor flips…. or is my ;motor slow?? It’s got a lot of fun now?! Can you tell me about it??