You definitely shouldn’t have a CEL come
Up after this install. You must have the plug on the IC piping where it’s pulling air. Check and make sure that plug is pushed all the way up as far as it can go and the clamp is tight.
The more the factory exhaust breaks in, you will get more burbles and pops. I have a PRL Dp/fp and there’s a ton of pops and burbles in between 1st-2nd and 2nd-3rd shifts.