u/Dull_Skin_8505

Alright so ive read some conflicting advice. Do i need to retune my car once i have the cats removed? Also for added info i have an ess supercharger installed. I can hear the cats starting to rattle underneath the car at idle and acceleration. I would keep them on obviously if i could but i dont think they will last much longer.

Edit: Ii was also looking at defoulers to stop the car from throwing a code also.