RS Clio 182
if i lay under my car and rev the engine when i let go off the throttle there is a rattle coming from underneath, do you think the catalyser could have broken up, the car drives as it should but will it cause any damage to the engine, i can afford to replace cat yet, just had belts done, tax and then when i got home iv got a screw in the sidewall of my eagle f1 lol