I got my straight pipe done and after that i started noticing this problem. When I am in gear going above 6k rpms the car loses pull and the rpm meter kind of stays in one spot and cant go up. I have a youtube video about this problem. In my video I rev the car with the gas pedal all the way down and for some reason the rpms cant go up they are kind of stuck. In the video i also have a check engine for P0420 the cat light. Please help.

 

you posted a private video?

 

Sorry, I did not know it was private. I fixed it now

 

What cel do you have? is it just the cell for removing the cat?

 

I did not remove the cat and it gives me the code of p0420

 

You gutted it then I assume? If not what did you "straight pipe"?

 

I'm guessing he means "straight piped" as in only from the cat-back. Like no muffler. If the cat is still on the car, and you haven't gutted it, then it sounds like a clogged cat to me. If the cat is indeed still on there, don't drive it until you either
a) gut the cat
2) replace the cat
d) install a midpipe and have it truly "straight piped"

If you continue to drive it like this, say so-long to your engine

 

I figured it out yesterday I found a youtube video with the same problem and turns our that dude had a clogged cat so I will take mine off and clean it this weekend

 

It's not physically possible to clean it. That's why I said you have to gut it or replace it, either with a new one or with a midpipe.