Two thousand eleven prius, I think the fuel pump maybe going need some advice

I think we called it a big heat. I have a clog in my converter.Because it's been smelling like rotten eggs 2 years. Only on heavy acceleration on the Expressway. And then it goes away. But after that hot day, I parked the car about 10 AM, and when the temperature went up another 15°, it was well over a 100I had that hesitation. It went away. I'm not a parts replacing guy. But I gotta yeah. Cheap, aftermarket converter, and I want to put it in because I have a feeling that's no good, no codes, but I think it's clogging, I've driven the car the last 2 and a 1/2 days, the car's been good. They're on the really hot day. Of over 100 degrees , it's in the city. Was horrible. I don't really care about the mileage. As far as price, but the car was running decent with horrible mileage. But full power of the engine. I will pro properly diagnose the fuel pump. I'm not a parchery placer, but common sense. I put 50000 miles on it in 2 years. It always had that odor I replaced a head gasket, some suspension parts, new struts, new shocks, new rotors, and brakes. It's not going to break the bank to put this cheap converter on What's the worst can happen? I get it light on in a dash. I'm inspected for another twelve months