I have a problem, I have a 92 bubble with a b16 swap and, when I turn on the car and run it while its cold it is totally normal, but when I drive it for a little and get to normal running temperature, I have barely any power. when I shift in to first and try to go a quick it just accelerates as if I was driving normal. it is weird because the engine still revs high when i step on the gas, just the acceleration doesnt match up. I have a rattle in my catalytic converter that is getting worse, I dont know if that could be the problem. any ideas?