Rep Power: 0

I just recently deleted my cat so idk if that is a cause, but I used a spark non fouler on my sensors and I have no lights on at all....but when I'm in gear at lower rpms my engine has a very slight stutter sound, i dont feel much other than just hearing the stutter come from the fart can, it wasnt there before so I'm wondering if yall can help me. I kinda like the sound but I dont want there to be something wrong with it....the other mod on the car is a short ram air intake "hot air intake lol"