so I ordered some new parts. My down pipe and test pipe got delayed a few weeks so I went ahead and just installed the cat back exhaust. The bolts on the cat were rusted on and it took a wile to break the bolts free. I ended up bending the cat doing so. The car didn't run right after that. Sputtered a lot if I didn't give it a lot of gas off the line and after about a week of driving it's giving me the p0100 code. Don't know if that's because I ****ed up my cat or if it's a separate problem

 

https://www.obd-codes.com/p0100 here is the link for you code its just your mass air flow sensor code with could be bad sensor before replacing it if you have evo buddy try to swap it and see if it goes away then change if needed