Hello everyone, I have an 01 Silverado with 180k. I’m having an issue with my engine, it runs great till I get to about half throttle, then it Boggs down and has no power, back of the throttle and it’s fine. I have a k and n cold air intake on it. I have just replaced the throttle position sensor but no change. My issue is that my ODB 2 port is not working so I can’t run the engine code, I’m looking for a possible solution or if anyone has had similar problems. I’m not looking forward to just throwing sensors at it till I find the problem. I’m thinking that the Cats are some what clogged up. Any help is greatly appreciated. Thank you