ok.. my intake manifold is backfiring.. when i start the car the rpms straight rev to redline and hit the limiter and stays there.. when i disconnect my tps i can hold the rev at around 2500rpms and thats when it starts to backfire in the manifold.. you can see the flames up from the throttle body.. CAN ANYONE HELP ME?

 

Check your spark plug wires, if they are crossed it could cuase this, or bent valves. just an idea

 

DANGER TO MANIFOLD!!!!!!!