dmxplayainc21

Have a mazda rx8 with 95k miles and its giving me some issues , i will start the the rpms remain normal but whenever i hit on the gas it will not rev pass
3k rpms , even if i floor it ......i will be driving the car and the highest speed that the car reaches is 35mph and does the same on first and second gear ....i already replaced the coils , spark plugs , ignition wires , cleaned maf and sea foamed it ........ Is there anything else that i should be looking for ?? please any advice you may have lmk ... thanks